Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck

CVE-2026-119572Traefik 3.7.0-ea.1 before 3.7.15 mTLS Bypass via Ingress NGINX Provider

High 8.7

In plain English

A high-severity improper authentication in traefik from traefik. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.2%top 91.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
traefik	traefik	3.7.0-ea.1 – before 3.7.15

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-p8wx-ph99-xgcr) vendor-advisory
VulnCheck Advisory: Traefik 3.7.0-ea.1 before 3.7.15 mTLS Bypass via Ingress NGINX Provider third-party-advisory