Intel

AIKIDO-2026-476431

github.com/traefik/traefik/v3 is vulnerable to Incorrect Authorization

CVE-2026-119573Published 3 days ago
November 6, 2026

21

CVE Score

Low

Incorrect Authorization

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TL;DR

Traefik’s Kubernetes Ingress NGINX provider skipped the cross-namespace check when it reused a cached client-authentication TLS option, letting a user who could create Ingresses in one namespace use another namespace’s CA secret on their routes and learn whether it existed and was in use. This required allowCrossNamespaceResources to be disabled and the secret to have already been used by another Ingress; its contents were not disclosed. The fix is available in Traefik 3.7.15.

How do I fix this?

Upgrade the github.com/traefik/traefik/v3 package to 3.7.15 or later.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range of github.com/traefik/traefik/v3.

Versions

3.7.11 - 3.7.14

Fixed in 3.7.15

Background info

github.com/traefik/traefik/v3 is vulnerable to Incorrect Authorization in versions 3.7.11 - 3.7.14.

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