CVE-2026-119573
Traefik 3.7.11 before 3.7.15 Cross-Namespace Authorization Bypass via auth-tls-secret
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | traefik |
| Product | traefik |
| Published | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
traefik / traefik
3.7.11 < 3.7.15
References
Credits
🔍 lavkumarv