{"url":"http://public2.vulnerablecode.io/api/packages/135204?format=json","purl":"pkg:gem/puma@4.1.0","type":"gem","namespace":"","name":"puma","version":"4.1.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"5.6.9","latest_non_vulnerable_version":"6.4.3","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/11382?format=json","vulnerability_id":"VCID-5zm7-c7nu-quad","summary":"Puma with proxy which forwards LF characters as line endings could allow HTTP request smuggling\nPrior to `puma` version 5.5.0, using `puma` with a proxy which forwards LF characters as line endings could allow HTTP request smuggling. A client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client.\n\nThis behavior (forwarding LF characters as line endings) is very uncommon amongst proxy servers, so we have graded the impact here as \"low\". Puma is only aware of a single proxy server which has this behavior.\n\nIf the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request's body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41136.json","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41136.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41136","reference_id":"","reference_type":"","scores":[{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52164","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.522","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52192","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52244","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.5226","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52256","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52218","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52233","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52113","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52197","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52201","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52148","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52183","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52156","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00288","scoring_system":"epss","scoring_elements":"0.52249","published_at":"2026-04-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41136"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23634","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23634"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24790","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24790"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/436c71807f00e07070902a03f79fd3e130eb6b18","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/436c71807f00e07070902a03f79fd3e130eb6b18"},{"reference_url":"https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f"},{"reference_url":"https://github.com/puma/puma/commit/fb6ad8f8013ab5cdbb2f444cbfabd0b4fde71139","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/fb6ad8f8013ab5cdbb2f444cbfabd0b4fde71139"},{"reference_url":"https://github.com/puma/puma/releases/tag/v4.3.9","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url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vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.5.1"}],"aliases":["CVE-2021-41136","GHSA-48w2-rm65-62xx"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-5zm7-c7nu-quad"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/33438?format=json","vulnerability_id":"VCID-ap87-c4dc-zfcy","summary":"HTTP Response Splitting (Early Hints) in Puma\n### Impact\nIf an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as [HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting).\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to [CVE-2020-5247](https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v), which fixed this vulnerability but only for regular responses.\n\n### Patches\nThis has been fixed in 4.3.3 and 3.12.4.\n\n### Workarounds\nUsers can not allow untrusted/user input in the Early Hints response header.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [puma](https://github.com/puma/puma)\n* Email us a project maintainer. [Email addresses are listed in our Code of Conduct](https://github.com/puma/puma/blob/master/CODE_OF_CONDUCT.md#enforcement).","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5249.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5249.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5249","reference_id":"","reference_type":"","scores":[{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65918","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.6592","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65909","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65899","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.6591","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65896","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65861","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65891","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65825","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65775","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65903","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65885","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65873","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65821","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.65855","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5249"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5249","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5249"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3","scoring_elements":""},{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5249","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5249"},{"reference_url":"https://owasp.org/www-community/attacks/HTTP_Response_Splitting","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://owasp.org/www-community/attacks/HTTP_Response_Splitting"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1816181","reference_id":"1816181","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1816181"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953122","reference_id":"953122","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953122"},{"reference_url":"https://github.com/advisories/GHSA-33vf-4xgg-9r58","reference_id":"GHSA-33vf-4xgg-9r58","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-33vf-4xgg-9r58"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/73128?format=json","purl":"pkg:gem/puma@4.3.3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-5zm7-c7nu-quad"},{"vulnerability":"VCID-bk4b-h5hu-2qeq"},{"vulnerability":"VCID-euqw-bed6-z7d6"},{"vulnerability":"VCID-fhu7-fyha-9khj"},{"vulnerability":"VCID-gkf9-7a9x-nkh4"},{"vulnerability":"VCID-jwun-grgg-2uet"},{"vulnerability":"VCID-nxhw-rdtz-zyar"},{"vulnerability":"VCID-pvph-c6vu-qkhn"},{"vulnerability":"VCID-q37p-vzmm-aken"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@4.3.3"}],"aliases":["CVE-2020-5249","GHSA-33vf-4xgg-9r58"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ap87-c4dc-zfcy"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/33977?format=json","vulnerability_id":"VCID-bk4b-h5hu-2qeq","summary":"HTTP Smuggling via Transfer-Encoding Header in Puma\n### Impact\nThis is a similar but different vulnerability to the one patched in 3.12.5 and 4.3.4.\n\nA client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. \n\nIf the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request's body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client.\n\n### Patches\n\nThe problem has been fixed in Puma 3.12.6 and Puma 4.3.5.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [Puma](https://github.com/puma/puma)\n* See our [security policy](https://github.com/puma/puma/security/policy)","references":[{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html"},{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-11077.json","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-11077.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-11077","reference_id":"","reference_type":"","scores":[{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74439","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74431","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74394","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74402","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74422","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74401","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74386","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74353","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74348","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.7447","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74472","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74463","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74429","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74379","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00821","scoring_system":"epss","scoring_elements":"0.74352","published_at":"2026-04-02T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-11077"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11077","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11077"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3","scoring_elements":""},{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-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Smuggling via Transfer-Encoding Header in Puma\n### Impact\n\nBy using an invalid transfer-encoding header, an attacker could [smuggle an HTTP response.](https://portswigger.net/web-security/request-smuggling)\n\nOriginally reported by @ZeddYu, who has our thanks for the detailed report.\n\n### Patches\n\nThe problem has been fixed in Puma 3.12.5 and Puma 4.3.4.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [Puma](https://github.com/puma/puma)\n* See our [security policy](https://github.com/puma/puma/security/policy)","references":[{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html"},{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-11076.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-11076.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-11076","reference_id":"","reference_type":"","scores":[{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82798","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82678","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82704","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.8271","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82728","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82722","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82718","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82757","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82761","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82783","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01782","scoring_system":"epss","scoring_elements":"0.82792","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01939","scoring_system":"epss","scoring_elements":"0.83381","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01939","scoring_system":"epss","scoring_elements":"0.83366","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01939","scoring_system":"epss","scoring_elements":"0.83353","published_at":"2026-04-01T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-11076"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11076","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11076"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22"},{"reference_url":"https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""},{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"cv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Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')\nPuma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-40175.json","reference_id":"","reference_type":"","scores":[{"value":"7.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-40175.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2023-40175","reference_id":"","reference_type":"","scores":[{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59312","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59335","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59354","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59266","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59348","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59315","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59332","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59349","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59279","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.5933","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59317","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59302","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2023-40175"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40175","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40175"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/690155e7d644b80eeef0a6094f9826ee41f1080a","reference_id":"","reference_type":"","scores":[{"value":"7.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-07T20:03:28Z/"}],"url":"https://github.com/puma/puma/commit/690155e7d644b80eeef0a6094f9826ee41f1080a"},{"reference_url":"https://github.com/puma/puma/commit/7405a219801dcebc0ad6e0aa108d4319ca23f662","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/7405a219801dcebc0ad6e0aa108d4319ca23f662"},{"reference_url":"https://github.com/puma/puma/commit/ed0f2f94b56982c687452504b95d5f1fbbe3eed1","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/ed0f2f94b56982c687452504b95d5f1fbbe3eed1"},{"reference_url":"https://github.com/puma/puma/releases/tag/v5.6.7","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/releases/tag/v5.6.7"},{"reference_url":"https://github.com/puma/puma/releases/tag/v6.3.1","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/releases/tag/v6.3.1"},{"reference_url":"https://github.com/rubysec/ruby-adviso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Interpretation of HTTP Requests ('HTTP Request Smuggling')\nPuma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 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of information in Action Pack\nAction Pack is a framework for handling and responding to web requests. Under certain circumstances response bodies will not be closed. In the event a response is *not* notified of a `close`, `ActionDispatch::Executor` will not know to reset thread local state for the next request. This can lead to data being leaked to subsequent requests. This has been fixed in Rails 7.0.2.1, 6.1.4.5, 6.0.4.5, and 5.2.6.1. Upgrading is highly recommended, but to work around this problem a middleware described in GHSA-wh98-p28r-vrc9 can be used.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-23633.json","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-23633.json"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-23634.json","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-23634.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-23633","reference_id":"","reference_type":"","scores":[{"value":"0.00303","scoring_system":"epss","scoring_elements":"0.53568","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00303","scoring_system":"epss","scoring_elements":"0.53543","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00303","scoring_system":"epss","scoring_elements":"0.53606","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00303","scoring_system":"epss","scoring_elements":"0.5358","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58623","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58685","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.5868","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58648","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58667","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58687","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58669","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58662","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.5861","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00367","scoring_system":"epss","scoring_elements":"0.58643","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-23633"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-23634","reference_id":"","reference_type":"","scores":[{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.6327","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63288","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63269","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63277","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63284","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.6329","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63267","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63256","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.6325","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63276","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63198","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00441","scoring_system":"epss","scoring_elements":"0.63233","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00453","scoring_system":"epss","scoring_elements":"0.63763","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00453","scoring_system":"epss","scoring_elements":"0.63789","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-23634"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22942","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22942"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44528","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44528"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21831","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21831"},{"reference_url":"https://cve.mit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HTTP Request/Response Smuggling vulnerability\n### Impact\nPrior to versions 6.4.2 and 5.6.8, puma exhibited dangerous behavior when parsing chunked transfer encoding bodies.\n\nFixed versions limit the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption.\n\n### Patches\n\nThe vulnerability has been fixed in 6.4.2 and 5.6.8.\n\n### Workarounds\n\nNo known workarounds.\n\n### References\n\n* [HTTP Request Smuggling](https://portswigger.net/web-security/request-smuggling)\n* Open an issue in [Puma](https://github.com/puma/puma)\n* See our [security policy](https://github.com/puma/puma/security/policy)","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-21647.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-21647.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2024-21647","reference_id":"","reference_type":"","scores":[{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85293","published_at":"2026-04-29T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85294","published_at":"2026-04-26T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85285","published_at":"2026-04-24T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85262","published_at":"2026-04-21T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85263","published_at":"2026-04-18T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85261","published_at":"2026-04-16T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85241","published_at":"2026-04-13T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85245","published_at":"2026-04-12T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85247","published_at":"2026-04-11T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85233","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85225","published_at":"2026-04-08T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85203","published_at":"2026-04-07T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85183","published_at":"2026-04-02T12:55:00Z"},{"value":"0.0246","scoring_system":"epss","scoring_elements":"0.85201","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2024-21647"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21647","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21647"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-05-08T15:56:45Z/"}],"url":"https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93"},{"reference_url":"https://github.com/puma/puma/commit/60d5ee3734adc8cee85c3f0561af392448fe19b7","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/60d5ee3734adc8cee85c3f0561af392448fe19b7"},{"reference_url":"https://github.com/puma/puma/commit/bbb880ffb6debbfdea535b4b3eb2204d49ae151d","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/bbb880ffb6debbfdea535b4b3eb2204d49ae151d"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3","scoring_elements":""},{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-05-08T15:56:45Z/"}],"url":"https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-21647.yml","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-21647.yml"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21647","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21647"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1060345","reference_id":"1060345","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1060345"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2257340","reference_id":"2257340","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2257340"},{"reference_url":"https://github.com/advisories/GHSA-c2f4-cvqm-65w2","reference_id":"GHSA-c2f4-cvqm-65w2","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-c2f4-cvqm-65w2"},{"reference_url":"https://usn.ubuntu.com/6597-1/","reference_id":"USN-6597-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/6597-1/"},{"reference_url":"https://usn.ubuntu.com/6682-1/","reference_id":"USN-6682-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/6682-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/50207?format=json","purl":"pkg:gem/puma@5.6.8","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.6.8"},{"url":"http://public2.vulnerablecode.io/api/packages/50205?format=json","purl":"pkg:gem/puma@6.4.2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@6.4.2"}],"aliases":["CVE-2024-21647","GHSA-c2f4-cvqm-65w2"],"risk_score":3.4,"exploitability":"0.5","weighted_severity":"6.8","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-nxhw-rdtz-zyar"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/33339?format=json","vulnerability_id":"VCID-pr2m-wx1b-hqbz","summary":"HTTP Response Splitting in Puma\nIn Puma (RubyGem) before 4.3.2 and 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server.\n\nThis has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5247.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5247.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5247","reference_id":"","reference_type":"","scores":[{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84099","published_at":"2026-04-29T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84095","published_at":"2026-04-26T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84089","published_at":"2026-04-24T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84063","published_at":"2026-04-21T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84061","published_at":"2026-04-18T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84041","published_at":"2026-04-12T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84001","published_at":"2026-04-07T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.83998","published_at":"2026-04-04T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.83983","published_at":"2026-04-02T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.83969","published_at":"2026-04-01T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84059","published_at":"2026-04-16T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84036","published_at":"2026-04-13T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84047","published_at":"2026-04-11T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.8403","published_at":"2026-04-09T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84024","published_at":"2026-04-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5247"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5247","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5247"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/c36491756f68a9d6a8b3a49e7e5eb07fe6f1332f","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/c36491756f68a9d6a8b3a49e7e5eb07fe6f1332f"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3","scoring_elements":""},{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5247.yml","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5247.yml"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK","refer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ity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-pr2m-wx1b-hqbz"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/13338?format=json","vulnerability_id":"VCID-pvph-c6vu-qkhn","summary":"Puma's header normalization allows for client to clobber proxy set headers\n### Impact\n\nClients could clobber values set by intermediate proxies (such as X-Forwarded-For) by providing a underscore version of the same header (X-Forwarded_For). Any users trusting headers set by their proxy may be affected. Attackers may be able to downgrade connections to HTTP (non-SSL) or redirect responses, which could cause confidentiality leaks if combined with a separate MITM attack. \n\n### Patches\nv6.4.3/v5.6.9 now discards any headers using underscores if the non-underscore version also exists. Effectively, allowing the proxy defined headers to always win.\n\n### Workarounds\nNginx has a [underscores_in_headers](https://nginx.org/en/docs/http/ngx_http_core_module.html#underscores_in_headers) configuration variable to discard these headers at the proxy level.\n\nAny users that are implicitly trusting the proxy defined headers for security or availability should immediately cease doing so until upgraded to the fixed versions.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-45614.json","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-45614.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2024-45614","reference_id":"","reference_type":"","scores":[{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72991","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72993","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72983","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72942","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.7295","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72898","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72923","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72906","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.7294","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72847","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72885","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00739","scoring_system":"epss","scoring_elements":"0.72899","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0076","scoring_system":"epss","scoring_elements":"0.73289","published_at":"2026-04-02T12:55:00Z"},{"value":"0.0076","scoring_system":"epss","scoring_elements":"0.73312","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2024-45614"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-45614","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-45614"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/commit/cac3fd18cf29ed43719ff5d52d9cfec215f0a043","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/cac3fd18cf29ed43719ff5d52d9cfec215f0a043"},{"reference_url":"https://github.com/puma/puma/commit/f196b23be24712fb8fb16051cc124798cc84f70e","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/f196b23be24712fb8fb16051cc124798cc84f70e"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-9hf4-67fc-4vf4","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3","scoring_elements":""},{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-20T13:54:35Z/"}],"url":"https://github.com/puma/puma/security/advisories/GHSA-9hf4-67fc-4vf4"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-45614.yml","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-45614.yml"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html"},{"reference_url":"https://nginx.org/en/docs/http/ngx_http_core_module.html#underscores_in_headers","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-20T13:54:35Z/"}],"url":"https://nginx.org/en/docs/http/ngx_http_core_module.html#underscores_in_headers"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45614","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45614"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1082379","reference_id":"1082379","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1082379"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2313672","reference_id":"2313672","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2313672"},{"reference_url":"https://github.com/advisories/GHSA-9hf4-67fc-4vf4","reference_id":"GHSA-9hf4-67fc-4vf4","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-9hf4-67fc-4vf4"},{"reference_url":"https://usn.ubuntu.com/7031-1/","reference_id":"USN-7031-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/7031-1/"},{"reference_url":"https://usn.ubuntu.com/7031-2/","reference_id":"USN-7031-2","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/7031-2/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/47660?format=json","purl":"pkg:gem/puma@5.6.9","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.6.9"},{"url":"http://public2.vulnerablecode.io/api/packages/47662?format=json","purl":"pkg:gem/puma@6.4.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@6.4.3"}],"aliases":["CVE-2024-45614","GHSA-9hf4-67fc-4vf4"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-pvph-c6vu-qkhn"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/47854?format=json","vulnerability_id":"VCID-q37p-vzmm-aken","summary":"Puma's Keepalive Connections Causing Denial Of Service\nThis vulnerability is related to [CVE-2019-16770](https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994).\n\n### Impact\n\nThe fix for CVE-2019-16770 was incomplete. The original fix only protected existing connections that had already been accepted from having their requests starved by greedy persistent-connections saturating all threads in the same process. However, new connections may still be starved by greedy persistent-connections saturating all threads in all processes in the cluster.\n\nA `puma` server which received more concurrent `keep-alive` connections than the server had threads in its threadpool would service only a subset of connections, denying service to the unserved connections.\n\n### Patches\n\nThis problem has been fixed in `puma` 4.3.8 and 5.3.1.\n\n### Workarounds\n\nSetting `queue_requests false` also fixes the issue. This is not advised when using `puma` without a reverse proxy, such as `nginx` or `apache`, because you will open yourself to slow client attacks (e.g. [slowloris](https://en.wikipedia.org/wiki/Slowloris_(computer_security))).\n\nThe fix is very small. [A git patch is available here](https://gist.github.com/nateberkopec/4b3ea5676c0d70cbb37c82d54be25837) for those using [unsupported versions](https://github.com/puma/puma/security/policy#supported-versions) of Puma.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [Puma](https://github.com/puma/puma).\n* To report problems with this fix or to report another vulnerability, see [our security policy.](https://github.com/puma/puma/security/policy)\n\n### Acknowledgements\n\nThank you to @MSP-Greg, @wjordan and @evanphx for their review on this issue. \n\nThank you to @ioquatix for providing a modified fork of `wrk` which made debugging this issue much easier.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29509.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29509.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-29509","reference_id":"","reference_type":"","scores":[{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80227","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80094","published_at":"2026-04-01T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80102","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80122","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80109","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80138","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80145","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80164","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80148","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.8014","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.8017","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80173","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80202","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01358","scoring_system":"epss","scoring_elements":"0.80212","published_at":"2026-04-26T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-29509"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29509","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29509"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://gist.github.com/nateberkopec/4b3ea5676c0d70cbb37c82d54be25837","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://gist.github.com/nateberkopec/4b3ea5676c0d70cbb37c82d54be25837"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-q28m-8xjw-8vr5","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""},{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-q28m-8xjw-8vr5"},{"reference_url":"https://github.com/puma/puma/security/policy","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/policy"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2021-29509.yml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2021-29509.yml"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29509","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29509"},{"reference_url":"https://rubygems.org/gems/puma","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://rubygems.org/gems/puma"},{"reference_url":"https://security.gentoo.org/glsa/202208-28","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://security.gentoo.org/glsa/202208-28"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1964874","reference_id":"1964874","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1964874"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989054","reference_id":"989054","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989054"},{"reference_url":"https://github.com/advisories/GHSA-q28m-8xjw-8vr5","reference_id":"GHSA-q28m-8xjw-8vr5","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-q28m-8xjw-8vr5"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4702","reference_id":"RHSA-2021:4702","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4702"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/77274?format=json","purl":"pkg:gem/puma@4.3.8","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-5zm7-c7nu-quad"},{"vulnerability":"VCID-fhu7-fyha-9khj"},{"vulnerability":"VCID-gkf9-7a9x-nkh4"},{"vulnerability":"VCID-jwun-grgg-2uet"},{"vulnerability":"VCID-nxhw-rdtz-zyar"},{"vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@4.3.8"},{"url":"http://public2.vulnerablecode.io/api/packages/135211?format=json","purl":"pkg:gem/puma@5.0.0.beta1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-5zm7-c7nu-quad"},{"vulnerability":"VCID-fhu7-fyha-9khj"},{"vulnerability":"VCID-gkf9-7a9x-nkh4"},{"vulnerability":"VCID-jwun-grgg-2uet"},{"vulnerability":"VCID-nxhw-rdtz-zyar"},{"vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.0.0.beta1"},{"url":"http://public2.vulnerablecode.io/api/packages/77275?format=json","purl":"pkg:gem/puma@5.3.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-5zm7-c7nu-quad"},{"vulnerability":"VCID-fhu7-fyha-9khj"},{"vulnerability":"VCID-gkf9-7a9x-nkh4"},{"vulnerability":"VCID-jwun-grgg-2uet"},{"vulnerability":"VCID-nxhw-rdtz-zyar"},{"vulnerability":"VCID-pvph-c6vu-qkhn"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.3.1"}],"aliases":["CVE-2021-29509","GHSA-q28m-8xjw-8vr5"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-q37p-vzmm-aken"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/50577?format=json","vulnerability_id":"VCID-tsrb-zgtb-8ybu","summary":"## Keepalive thread overload/DoS\n\n### Impact\n\nA poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack.\n\nIf more keepalive connections to Puma are opened than there are threads available, additional connections will wait permanently if the attacker sends requests frequently enough.\n\n### Patches\n\nThis vulnerability is patched in Puma 4.3.1 and 3.12.2.\n\n### Workarounds\n\nReverse proxies in front of Puma could be configured to always allow less than X keepalive connections to a Puma cluster or process, where X is the number of threads configured in Puma's thread pool.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue at [puma](github.com/puma/puma).","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16770.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16770.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2019-16770","reference_id":"","reference_type":"","scores":[{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81695","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81552","published_at":"2026-04-01T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81564","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81585","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81583","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81611","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81616","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81636","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81624","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81654","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81658","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81682","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01587","scoring_system":"epss","scoring_elements":"0.81691","published_at":"2026-04-26T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2019-16770"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16770","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16770"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/advisories/GHSA-7xx3-m584-x994","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-7xx3-m584-x994"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3","scoring_elements":""},{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2019-16770.yml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2019-16770.yml"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16770","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16770"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1831297","reference_id":"1831297","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1831297"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946312","reference_id":"946312","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