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.
Metrics
CVSS 3.1 9.9/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| traefik | traefik | < 2.11.46; >= 3.0.0-beta1, < 3.6.17; >= 3.7.0-rc.0, < 3.7.1 |
| Red Hat | Red Hat OpenShift Dev Spaces 3.29 | — |
| Red Hat | Red Hat OpenShift GitOps | — |
| Red Hat | Red Hat OpenShift GitOps | — |
References
- https://github.com/traefik/traefik/releases/tag/v2.11.46Product, Release Notes
- https://github.com/traefik/traefik/releases/tag/v3.6.17Product, Release Notes
- https://github.com/traefik/traefik/releases/tag/v3.7.1Product, Release Notes
- https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjcExploit, Patch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:36820
- https://access.redhat.com/security/cve/CVE-2026-44774
- https://bugzilla.redhat.com/show_bug.cgi?id=2477937
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json
Timeline
- Published
- May 15, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Modified