CVE-2026-114635: traefik traefik

CVSS 8.7 (high) · published 2026-10-22

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 over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.

Affected products (NVD): traefik traefik

Fixed in (NVD): 2.11.58, 3.7.14

Weakness: CWE-288

Source: NVD CVE-2026-114635

References

• https://github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxx
• https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-sni-check-bypass-via-http-2-scheme

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