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.

PUBLISHED Reserved 2026-05-07 | Published 2026-05-15 | Updated 2026-05-16 | Assigner GitHub_M

Problem types

CWE-284: Improper Access Control

Product status

References

github.com/...raefik/security/advisories/GHSA-96qj-4jj5-wcjc

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

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

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

cve.org (CVE-2026-44774)

nvd.nist.gov (CVE-2026-44774)

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