{"id":"CVE-2026-114635","title":"Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme","summary":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header ov…","severity":"high","cvss":8.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-288"],"vendor":"traefik","product":"traefik","affected":["traefik < 2.11.58","traefik >= 3.0.0 < 3.7.14"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T01:43:36.508Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114635","references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxx","label":"GitHub Security Advisory (GHSA-fh26-gfpp-7xxx)"},{"url":"https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-sni-check-bypass-via-http-2-scheme","label":"VulnCheck Advisory: Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T02:23:25.185Z","slug":"CVE-2026-114635","body":"## Overview\n\nTraefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.\n\n## Affected\n\n- `traefik < 2.11.58`\n- `traefik >= 3.0.0 < 3.7.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}