{"id":"GHSA-gv8r-9rw9-9697","summary":"Traefik affected by TLS ClientAuth Bypass on HTTP/3","details":"### Summary\n\nThere is a potential vulnerability in Traefik managing HTTP/3 connections.\n\nMore details in the [CVE-2025-68121](https://nvd.nist.gov/vuln/detail/CVE-2025-68121).\n\n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v2.11.37\n- https://github.com/traefik/traefik/releases/tag/v3.6.8\n\n## Workarounds\n\nNo workaround\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).","aliases":["GO-2026-4530"],"modified":"2026-03-11T20:49:42.195947Z","published":"2026-02-20T21:14:27Z","database_specific":{"github_reviewed_at":"2026-02-20T21:14:27Z","nvd_published_at":null,"cwe_ids":["CWE-1395"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/traefik/traefik/security/advisories/GHSA-gv8r-9rw9-9697"},{"type":"PACKAGE","url":"https://github.com/traefik/traefik"}],"affected":[{"package":{"name":"github.com/traefik/traefik","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.7.34"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-gv8r-9rw9-9697/GHSA-gv8r-9rw9-9697.json"}},{"package":{"name":"github.com/traefik/traefik/v2","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.37"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2.11.36","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-gv8r-9rw9-9697/GHSA-gv8r-9rw9-9697.json"}},{"package":{"name":"github.com/traefik/traefik/v3","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.6.8"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 3.6.7","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-gv8r-9rw9-9697/GHSA-gv8r-9rw9-9697.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N"}]}