CVE-2026-114635

HIGH

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.

CVSS v3.1 Score

8.7
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Published: 10/22/2026Modified: 10/27/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-114635 — Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerabil...

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.

CVE-2026-114635
NIST NVD

References (2)

https://github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxxVendor Advisoryhttps://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-sni-check-bypass-via-http-2-schemeThird Party Advisory