PT-2026-56012 · Traefik · Traefik

Gooood4U · Publicado 2026-07-06 · Atualizado 2026-07-06 · CVE-2026-54765

Mitre

CVSS v4.0

6.3

Média

Vetor base

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N

Traefik is an open source HTTP reverse proxy and load balancer. From v3.7.0 prior to v3.7.6, Traefik's Kubernetes Gateway API provider may resolve two accepted HTTPRoutes that target the same backend Service:port but configure different backendRef filters to the same child service and apply only one route's filter set to all requests reaching that backend. In Gateway deployments where backendRef filters set security-sensitive headers, such as tenant identity, authorization context, or values the backend trusts, an attacker who can create an accepted HTTPRoute sharing the same backend Service:port may cause their route's filter context to be applied to another route's requests, potentially crossing namespace boundaries when a ReferenceGrant permits cross-namespace targeting. This issue is fixed in version v3.7.6.

Correção

Improper Access Control

Incorrect Authorization

Enumeração de Fraquezas

CWE-284

CWE-863

Identificadores relacionados

CVE-2026-54765

Produtos afetados

Traefik

Referências · 5

• https://github.com/traefik/traefik/pull/13367 · Nota
• https://github.com/traefik/traefik/security/advisories/GHSA-6p8f-p8j2-rqmv · Nota
• https://github.com/traefik/traefik/releases/tag/v3.7.6 · Nota
• https://github.com/traefik/traefik/commit/8aada7a7d52e4588a75386d8b86d270f6fe8d549 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-54765 · Nota de Segurança