{"url":"http://public2.vulnerablecode.io/api/packages/162945?format=json","purl":"pkg:gem/puma@5.5.0","type":"gem","namespace":"","name":"puma","version":"5.5.0","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/275693?format=json","vulnerability_id":"VCID-2ajy-ppmc-abd5","summary":"Puma PROXY Protocol v1 Accepts Repeated Protocol Headers on Persistent Connections\n## Impact\n\nPuma is vulnerable to source IP spoofing when set_remote_address\nproxy_protocol: :v1 is enabled and persistent connections are used.\n\nPROXY protocol v1 is a connection-level protocol. Support was added\nto Puma in v5.5.0. A proxy sends one PROXY header at the beginning\nof a TCP connection, before any HTTP data. Puma incorrectly re-parsed\nPROXY protocol headers after each keep-alive request on the same\nconnection. An attacker able to send HTTP requests through a trusted\nproxy could therefore inject a second PROXY header between HTTP\nrequests. Puma would treat the injected header as authoritative for\nthe next request and overwrite REMOTE_ADDR.\n\nThis can mislead applications or middleware that use REMOTE_ADDR for\nsecurity decisions, rate limiting, auditing, or allow/deny lists.\n\nOnly deployments that explicitly enable PROXY protocol v1 are affected,\nand will have set:\n\n  set_remote_address proxy_protocol: :v1\n\nPuma's default configuration is not affected. Deployments that do\nnot use persistent connections to Puma are also not expected to\nbe affected by this issue.\n\n## Workarounds\n\n* Disable PROXY protocol v1 parsing if it is not required:\n\n  # remove/comment this:\n  # set_remote_address proxy_protocol: :v1\n\nUsers can also disable persistent connections to Puma, for example:\n\n  enable_keep_alives false","references":[{"reference_url":"https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-47737","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""}],"url":"https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-47737"}],"fixed_packages":[],"aliases":["CVE-2026-47737","GHSA-2vqw-3mp8-cgmx"],"risk_score":2.2,"exploitability":"0.5","weighted_severity":"4.5","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-2ajy-ppmc-abd5"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/3267?format=json","vulnerability_id":"VCID-4td1-xb1a-s3fp","summary":"","references":[{"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-2022-23634","reference_id":"","reference_type":"","scores":[{"value":"0.00479","scoring_system":"epss","scoring_elements":"0.65465","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00479","scoring_system":"epss","scoring_elements":"0.65402","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00479","scoring_system":"epss","scoring_elements":"0.65454","published_at":"2026-06-05T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-23634"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136","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":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/advisories/GHSA-rmj8-8hhh-gv5h","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-rmj8-8hhh-gv5h"},{"reference_url":"https://github.com/puma/puma","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/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/commit/b70f451fe8abc0cff192c065d549778452e155bb","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3","scoring_elements":""},{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"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-rmj8-8hhh-gv5h"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.yml","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.yml"},{"reference_url":"https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23634","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23634"},{"reference_url":"https://security.gentoo.org/glsa/202208-28","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://security.gentoo.org/glsa/202208-28"},{"reference_url":"https://www.debian.org/security/2022/dsa-5146","reference_id":"","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.debian.org/security/2022/dsa-5146"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1005391","reference_id":"1005391","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1005391"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2054211","reference_id":"2054211","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2054211"},{"reference_url":"https://security.archlinux.org/AVG-2764","reference_id":"AVG-2764","reference_type":"","scores":[{"value":"High","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-2764"},{"reference_url":"https://github.com/advisories/GHSA-wh98-p28r-vrc9","reference_id":"GHSA-wh98-p28r-vrc9","reference_type":"","scores":[{"value":"8.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-wh98-p28r-vrc9"},{"reference_url":"https://access.redhat.com/errata/RHSA-2022:5498","reference_id":"RHSA-2022:5498","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2022:5498"},{"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/147737?format=json","purl":"pkg:gem/puma@5.6.2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-jqd6-2kq1-y7fu"},{"vulnerability":"VCID-prw8-q89n-fkcp"},{"vulnerability":"VCID-qpmp-qmsu-vufy"},{"vulnerability":"VCID-y1y1-3d8u-yud7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.6.2"}],"aliases":["CVE-2022-23634","GHSA-rmj8-8hhh-gv5h"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-4td1-xb1a-s3fp"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/51641?format=json","vulnerability_id":"VCID-jqd6-2kq1-y7fu","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\nX-Forwarded-For) by providing a underscore version of the same\nheader (X-Forwarded_For).\n\nAny users trusting headers set by their proxy may be affected.\nAttackers may be able to downgrade connections to HTTP (non-SSL)\nor redirect responses, which could cause confidentiality leaks\nif combined with a separate MITM attack.\n\n### Patches\nv6.4.3/v5.6.9 now discards any headers using underscores if the\nnon-underscore version also exists.  Effectively, allowing the\nproxy 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)\nconfiguration variable to discard these headers at the proxy level.\n\nAny users that are implicitly trusting the proxy defined headers\nfor security or availability should immediately cease doing so\nuntil 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":"0.00803","scoring_system":"epss","scoring_elements":"0.7449","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00803","scoring_system":"epss","scoring_elements":"0.74484","published_at":"2026-06-05T12:55:00Z"}],"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://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://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://nvd.nist.gov/vuln/detail/CVE-2024-45614","reference_id":"CVE-2024-45614","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://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-45614.yml","reference_id":"CVE-2024-45614.YML","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://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/82770?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/82771?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-jqd6-2kq1-y7fu"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/45874?format=json","vulnerability_id":"VCID-prw8-q89n-fkcp","summary":"Inconsistent 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":"0.5966","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00377","scoring_system":"epss","scoring_elements":"0.59657","published_at":"2026-06-05T12:55:00Z"}],"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-advisory-db/blob/master/gems/puma/CVE-2023-40175.yml","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/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2023-40175.yml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050079","reference_id":"1050079","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050079"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2232729","reference_id":"2232729","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2232729"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40175","reference_id":"CVE-2023-40175","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://nvd.nist.gov/vuln/detail/CVE-2023-40175"},{"reference_url":"https://github.com/advisories/GHSA-68xg-gqqm-vgj8","reference_id":"GHSA-68xg-gqqm-vgj8","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-68xg-gqqm-vgj8"},{"reference_url":"https://github.com/puma/puma/security/advisories/GHSA-68xg-gqqm-vgj8","reference_id":"GHSA-68xg-gqqm-vgj8","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3","scoring_elements":""},{"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/security/advisories/GHSA-68xg-gqqm-vgj8"},{"reference_url":"https://access.redhat.com/errata/RHSA-2024:0797","reference_id":"RHSA-2024:0797","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2024:0797"},{"reference_url":"https://usn.ubuntu.com/6399-1/","reference_id":"USN-6399-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/6399-1/"},{"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/66594?format=json","purl":"pkg:gem/puma@5.6.7","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-jqd6-2kq1-y7fu"},{"vulnerability":"VCID-qpmp-qmsu-vufy"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.6.7"},{"url":"http://public2.vulnerablecode.io/api/packages/66595?format=json","purl":"pkg:gem/puma@6.3.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-jqd6-2kq1-y7fu"},{"vulnerability":"VCID-qpmp-qmsu-vufy"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@6.3.1"}],"aliases":["CVE-2023-40175","GHSA-68xg-gqqm-vgj8"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-prw8-q89n-fkcp"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/46792?format=json","vulnerability_id":"VCID-qpmp-qmsu-vufy","summary":"Puma HTTP Request/Response Smuggling vulnerability\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) 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PROXY Protocol v1 Parser Allows Remote Memory Exhaustion\n## Impact\n\nPROXY protocol support for Puma was added in version 5.5.0.\n\nWhen PROXY protocol v1 support is enabled, Puma reads incoming bytes\ninto an internal buffer. It waits for \"\\r\\n\" to determine whether a\nPROXY v1 line is present. If an attacker opens a TCP connection and\ncontinuously sends bytes without CRLF, Puma keeps appending to this\npre-parse buffer.\n\nThis can cause unbounded in-process memory growth and additional\nCPU cost from repeatedly scanning the growing buffer for CRLF.\nA single, unauthenticated TCP connection can drive significant memory\ngrowth and may cause process/container OOM or degraded availability.\n\n Only Puma servers using the following non-default config are affected:\n\n set_remote_address proxy_protocol: :v1\n\n## Workarounds\n\n* Disable PROXY protocol v1 parsing if it is not required:\n  # remove/comment this:\n  # set_remote_address proxy_protocol: :v1\n\n* Restrict direct network access to Puma listeners using PROXY protocol:\n  * Only allow trusted load balancers/reverse proxies to connect.\n  * Block arbitrary client TCP access with firewall/security group rules.","references":[{"reference_url":"https://www.cve.org/CVERecord?id=CVE-2026-47736","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""}],"url":"https://www.cve.org/CVERecord?id=CVE-2026-47736"}],"fixed_packages":[],"aliases":["CVE-2026-47736","GHSA-qpgp-93vx-g8v8"],"risk_score":2.2,"exploitability":"0.5","weighted_severity":"4.5","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-yxp2-978j-fydw"}],"fixing_vulnerabilities":[],"risk_score":"4.5","resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/puma@5.5.0"}