CRITICALVulnerability
CVE-2026-85594
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.
Properties
- severity
- CRITICAL
- score
- 9.8
- cve_id
- CVE-2026-85594
- signal_observed_at
- 2026-09-16T21:37:07+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-09-04T12:17:22.830
- last_modified
- 2026-09-16T20:42:53.890
Related Entities (3)
HAS_WEAKNESS (1)
→[Weakness]Authorization Bypass Through User-Controlled Key
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
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