CVE-2026-44774

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json

https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc

https://github.com/traefik/traefik/releases/tag/v3.7.1

https://github.com/traefik/traefik/releases/tag/v3.6.17

https://github.com/traefik/traefik/releases/tag/v2.11.46

https://bugzilla.redhat.com/show_bug.cgi?id=2477937

https://access.redhat.com/security/cve/CVE-2026-44774

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS