CVE-2026-85597 Traefik before v2.11.55 and v3.0.0 through v3.7.10 mTLS Bypass via TLS Option Conflict

Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiti...

EUVD-2026-71020

Traefik before v2.11.55 contains a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution...

CVE-2026-85596

Traefik v3.7.0–v3.7.10 contains an authentication bypass in the Kubernetes Ingress NGINX provider . The TLS option for an Ingress annotated with nginx.ingress.kubernetes.io/auth-tls-secret is named after the Ingress namespace and name. When two Ingress objects share the same host, client CA secre...

CVE-2026-85597

Traefik before v2.11.55 is affected by a TLS option conflict resolution vulnerability. When a single router rule contains conflicting TLS options across multiple hostnames, the strict mTLS (client-certificate) requirement falls back to default options for all hosts, allowing unauthenticated attac...

CVE-2026-85596 Traefik v3.7 Authentication Bypass via TLS Option Conflict

Traefik versions = v3.7.0 and = v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider. The TLS option generated for an Ingress carrying the nginx.ingress.kubernetes.io/auth-tls-secret annotation was named after the Ingress namespace and name. As a result, two Ingress...