Is CVE-2026-119572 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-119572 being exploited in the wild.

How severe is CVE-2026-119572?

High severity, with a CVSS score of 8.7, published 30 October 2026.

Which products and versions are affected?

Traefik Labs Traefik 3.7.0-ea.1 through 3.7.14.

Is there a fix for CVE-2026-119572?

Yes: fixed in v3.7.15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-119572 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-119572?

Check whether you run Traefik Labs Traefik at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119572: Traefik ingress-nginx provider mTLS authentication bypass

CVE-2026-119572 · Severity: high · CVSS 8.7 · Published 2026-10-30

Traefik is a cloud-native API gateway and reverse proxy used to route traffic to backend services in Kubernetes environments. In vulnerable versions, when one Ingress on a host requires client certificate authentication (mTLS) and another Ingress on the same host does not, Traefik silently disables the client certificate requirement, allowing unauthenticated attackers to bypass authentication and reach protected backends. This could expose sensitive services and data to unauthorized access.

Technologies: Traefik Labs Traefik. Vendors: Traefik Labs.

Quick answers

Is CVE-2026-119572 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-119572 being exploited in the wild.
How severe is CVE-2026-119572?: High severity, with a CVSS score of 8.7, published 30 October 2026.
Which products and versions are affected?: Traefik Labs Traefik 3.7.0-ea.1 through 3.7.14.
Is there a fix for CVE-2026-119572?: Yes: fixed in v3.7.15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-119572 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-119572?: Check whether you run Traefik Labs Traefik at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: v3.7.15

Technical details

The Kubernetes Ingress NGINX provider incorrectly attaches TLS options per-Ingress rather than per-host, causing conflicting auth-tls-secret annotations to result in fallback to default TLS settings without client certificate verification. An unauthenticated network attacker can access backends configured to require mTLS by exploiting hosts with multiple Ingress definitions where at least one lacks auth-tls settings. The vulnerability affects versions 3.7.0-ea.1 through 3.7.14, with patched versions available in 3.7.15 and later.

Affected products

Traefik Labs Traefik 3.7.0-ea.1 through 3.7.14

Timeline

2026-10-16: disclosed
2026-10-30: advisory
2026-10-30: patched: v3.7.15 released

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.