Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
🚨 Three Traefik flaws affect HTTP routing and access controls. CVE-2026-114640: mTLS spoofing. CVE-2026-114636: authentication bypass. CVE-2026-114635: SNI check bypass. Review affected Ingress configurations and upgrade. 🔎 https://exploitgrid.net