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CVE-2026-85594

7.0 high SSVC exploitation: none Analyzed
NVD · CVE.org

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its Service, and if that middleware injects backend credentials, recover them at a controlled backend.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.0 · traefikNVD modified 2026-10-08 16:17

Affected (CPE criteria) 1

  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*

References 2