Traefik 3.7.11 before 3.7.15 contains an authorization bypass in the Kubernetes Ingress NGINX provider that skips the cross-namespace check on the auth-tls-secret annotation when a cached client authentication TLS option is reused. Users who can create Ingresses can reference another namespace's CA secret already used by another Ingress, enforcing it on their own routes and learning whether it exists, without disclosure of its contents.
Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Traefik 3.7.11 before 3.7.15 contains an authorization bypass in the Kubernetes Ingress NGINX provider that skips the cross-namespace check on the auth-tls-secret annotation when a cached client authentication TLS option is reused. Users who can create Ingresses can reference another namespace's CA secret already used by another Ingress, enforcing it on their own routes and learning whether it exists, without disclosure of its contents. | |
| Title | Traefik 3.7.11 before 3.7.15 Cross-Namespace Authorization Bypass via auth-tls-secret | |
| First Time appeared |
Traefik
Traefik traefik |
|
| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T15:53:49.154Z
Reserved: 2026-10-30T10:56:15.489Z
Link: CVE-2026-119573
No data.
Status : Awaiting Analysis
Published: 2026-10-30T14:16:46.267
Modified: 2026-10-30T14:16:46.407
Link: CVE-2026-119573
No data.
OpenCVE Enrichment
Updated: 2026-10-30T15:15:07Z
Weaknesses