Vulnerability Description
Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and expose or reroute that namespace's backend, defeating the namespace isolation allowCrossNamespace=false is meant to enforce. This issue is fixed in version 2.11.54, 3.6.25, 3.7.10.
Related Weaknesses (CWE)
References
- https://github.com/traefik/traefik/commit/65ebf4b47fbdc33e3856803a5844a404e094d5
- https://github.com/traefik/traefik/releases/tag/v2.11.54
- https://github.com/traefik/traefik/releases/tag/v3.6.25
- https://github.com/traefik/traefik/releases/tag/v3.7.10
- https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmq
FAQ
What is CVE-2026-71325?
CVE-2026-71325 is a documented vulnerability. Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for Tra...
How severe is CVE-2026-71325?
CVSS scoring is not yet available for CVE-2026-71325. Check NVD for updates.
Is there a patch for CVE-2026-71325?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.