CVE-2026-114640

CVE-2026-114640CVE-2026-114640

Description

Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to impersonate mTLS identities.

Scoring

CVSS 8.7 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Last modified2026-10-22
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.