Vulnerability Description
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.46, 3.6.17, and 3.7.1, Traefik's Kubernetes Gateway API provider allows a tenant with HTTPRoute creation permissions to expose the REST provider handler, bypassing the providers.rest.insecure=false setting. The Gateway provider accepts any TraefikService backend reference whose name ends with @internal, making it possible to route traffic to rest@internal in addition to the intended api@internal. In shared Gateway deployments where the REST provider is enabled, this allows a low-privileged actor to gain live dynamic configuration write access to Traefik, enabling unauthorized reconfiguration of routers and services. This vulnerability is fixed in 2.11.46, 3.6.17, and 3.7.1.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Traefik | Traefik | < 2.11.46 |
Related Weaknesses (CWE)
References
- https://github.com/traefik/traefik/releases/tag/v2.11.46ProductRelease Notes
- https://github.com/traefik/traefik/releases/tag/v3.6.17ProductRelease Notes
- https://github.com/traefik/traefik/releases/tag/v3.7.1ProductRelease Notes
- https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjcExploitPatchVendor Advisory
FAQ
What is CVE-2026-44774?
CVE-2026-44774 is a vulnerability with a CVSS score of 9.9 (CRITICAL). Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.46, 3.6.17, and 3.7.1, Traefik's Kubernetes Gateway API provider allows a tenant with HTTPRoute creation permissions to expose the RES...
How severe is CVE-2026-44774?
CVE-2026-44774 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-44774?
Check the references section above for vendor advisories and patch information. Affected products include: Traefik Traefik.