CVE-2026-119572

High

Description

Traefik from 3.7.0-ea.1 before 3.7.15 contains an authentication bypass vulnerability in the Kubernetes Ingress NGINX provider that silently disables mTLS configured via the auth-tls-secret annotation. When another Ingress declares a path on the same host without matching auth-tls settings, Traefik falls back to default TLS options, letting unauthenticated attackers reach backends requiring client certificates.

SeverityHigh

CVSS8.7

Exploit probability—

Product

Traefik

PublishedOct 30, 2026

First seenNov 4, 2026

Weakness typeCWE-287Improper authentication

How to fix

Update

traefik traefik3.7.15 or later

Vendor advisories

github.com/traefik/traefik/security/advisories/GHSA-p8wx-ph99-xgcr

Affected products

Product	Affected versions	Fixed in
traefik traefik	3.7.0-ea.1 ≤ v < 3.7.15	3.7.15

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