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CVE-2026-54764

CVE-2026-54764 · ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false

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. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of the sanitized forwarded request. As a result, an unauthenticated remote attacker can inject an X-Forwarded-Proto: https header over a plain HTTP connection and cause Traefik to forward X-Forwarded-Port: 443 to the authentication service, bypassing port-based authorization checks. This issue is fixed in versions v2.11.51, v3.6.22, and v3.7.6.

CVSS 6.9 · Media · EPSS 0,3%

Publicación
Actualización

Pila tecnológica: web

Productos y versiones afectados

  • traefik

    Versiones
    • < 2.11.51: Afectada
    • >= 3.0.0, < 3.6.22: Afectada
    • >= 3.7.0, < 3.7.6: Afectada

    Sin corrección publicada

Fuentes originales

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