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CVE-2026-88009

Estado: AnalizadaAlta (8.8)—

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS:4.0 AV:N/PR:N/UI:N indica explotación remota sin autenticación (T1190). Bypass de autorización path-scoped y routing entre vhosts permite eludir controles de acceso (T1556) y modificar la interpretación de requests (T1578). La evasión de access-log indica posible ocultamiento de activida

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementAuditUser Account ManagementRestrict File and Directory PermissionsPassword PoliciesOperating System Configuration

Tecnologías afectadas (1)

Traefik — Traefik

CWE

Referencias

JSON original (NVD)

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  "published": "2026-09-10T16:18:07.780",
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      "source": "security-advisories@github.com",
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    }
  ],
  "lastModified": "2026-09-14T19:59:14.810",
  "configurations": [
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