CVE-2026-85596
CVE-2026-85596 · Traefik v3.7 Authentication Bypass via TLS Option Conflict
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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 objects sharing the same host, the same client CA secret, and the same client-authentication mode produced two distinct TLS option names for that host. Traefik treats this as a TLS options conflict and falls back to the entry point's default TLS configuration, which does not request a client certificate, so a route configured with nginx.ingress.kubernetes.io/auth-tls-verify-client: "on" becomes reachable without a client certificate. Only the v3.7 line is affected; the issue is fixed in v3.7.11.
CVSS 8.2 · Alta · EPSS 0,4%
- Publicación
- Actualización
Pila tecnológica: web
Productos y versiones afectados
traefik
- Versiones
- ≥ 3.7.0, ≤ 3.7.10: Afectada (semver)
Sin corrección publicada