{"url":"http://public2.vulnerablecode.io/api/packages/76791?format=json","purl":"pkg:gem/gitlab-puma@4.3.2","type":"gem","namespace":"","name":"gitlab-puma","version":"4.3.2","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":null,"latest_non_vulnerable_version":null,"affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/51642?format=json","vulnerability_id":"VCID-8yqn-1dq4-ffh1","summary":"HTTP Response Splitting (Early Hints) in Puma\n### Impact\nIf an application using Puma allows untrusted input in an early-hints header,\nan attacker can use a carriage return character to end the header and inject\nmalicious content, such as additional headers or an entirely new response body.\nThis vulnerability is known as [HTTP Response\nSplitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting)\n\nWhile not an attack in itself, response splitting is a vector for several other\nattacks, 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),\nwhich 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.","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":"0.66252","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.66268","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.66208","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00498","scoring_system":"epss","scoring_elements":"0.66259","published_at":"2026-06-05T12:55:00Z"}],"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://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://nvd.nist.gov/vuln/detail/CVE-2020-5249","reference_id":"CVE-2020-5249","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://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/76793?format=json","purl":"pkg:gem/gitlab-puma@4.3.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/gitlab-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-8yqn-1dq4-ffh1"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/51640?format=json","vulnerability_id":"VCID-vsxc-v81n-wfcp","summary":"HTTP Response Splitting vulnerability in puma\nIf an application using Puma allows untrusted input in a response header,\nan attacker can use newline characters (i.e. CR, LF) to end the header and\ninject malicious content, such as additional headers or an entirely new\nresponse body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several\nother attacks, such as cross-site scripting (XSS).","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":"0.8437","published_at":"2026-06-07T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84376","published_at":"2026-06-06T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84373","published_at":"2026-06-05T12:55:00Z"},{"value":"0.02094","scoring_system":"epss","scoring_elements":"0.84349","published_at":"2026-06-04T12:55:00Z"}],"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","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://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://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254","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://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1816187","reference_id":"1816187","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1816187"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952766","reference_id":"952766","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952766"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5247","reference_id":"CVE-2020-5247","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-2020-5247"},{"reference_url":"https://github.com/advisories/GHSA-84j7-475p-hp8v","reference_id":"GHSA-84j7-475p-hp8v","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-84j7-475p-hp8v"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/76793?format=json","purl":"pkg:gem/gitlab-puma@4.3.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/gitlab-puma@4.3.3"}],"aliases":["CVE-2020-5247","GHSA-84j7-475p-hp8v"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-vsxc-v81n-wfcp"}],"fixing_vulnerabilities":[],"risk_score":"3.1","resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/gitlab-puma@4.3.2"}