Vulnerability in Traefik
CVE-2026-33433
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when `headerField` is configured with a non-canonical HTTP header name (e.g., `x-auth-user` instead of `X-Auth-User`), an authenticated…
EPSS: 0.000 (8.0th percentile) — read the EPSS interpretation.
Affected products
- Traefik — versions < 2.11.42, >= 3.0.0-beta1, < 3.6.11, >= 3.7.0-ea.1, < 3.7.0-ea.3
Weakness classification (CWE)
References
- https://github.com/traefik/traefik/security/advisories/GHSA-qr99-7898-vr7c (x_refsource_CONFIRM)
- https://github.com/traefik/traefik/releases/tag/v2.11.42 (x_refsource_MISC)
- https://github.com/traefik/traefik/releases/tag/v3.6.11 (x_refsource_MISC)
- https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.3 (x_refsource_MISC)