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CVE-2025-66490

CVE-2025-66490 · Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

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.

CVSS 6.9 · Media · EPSS 0,4%

Publicación
Actualización

Pila tecnológica: web

Productos y versiones afectados

  • traefik

    Versiones
    • github.com/traefik/traefik/v3 < 3.6.3: Afectada
    • github.com/traefik/traefik/v2 < 2.11.32: Afectada
    • github.com/traefik/traefik <= 1.7.34: Afectada

    Sin corrección publicada

Fuentes originales

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