Fiche vulnérabilité
CVE-2025-66490 : faille moyenne traefik traefik (CVSS 6.5)
Description
Traefik is an HTTP reverse proxy and load balancer. For versions prior to 2.11.32 and 2.11.31 through 3.6.2, requests using PathPrefix, Path or PathRegex matchers can bypass path normalization. When Traefik uses path-based routing, requests containing URL-encoded restricted characters (/, \, Null, ;, ?, #) can bypass the middleware chain and reach unintended backends. For example, a request to http://mydomain.example.com/admin%2F could reach service-a without triggering my-security-middleware, bypassing security controls for the /admin/ path. This issue is fixed in versions 2.11.32 and 3.6.3.
En bref
- Sévérité
- Moyenne (CVSS 6.5)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 9 déc. 2025
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- traefik traefik