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.
How to fix
- traefik traefik2.11.46, 3.6.17, 3.7.1 or later
- github.com/traefik/traefik/v33.7.1, 3.6.17 or later
- github.com/traefik/traefik/v22.11.46 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| traefik traefik | v < 2.11.46, 3.0.0 ≤ v < 3.6.17, 3.7.0 ≤ v < 3.7.1 | 2.11.46, 3.6.17, 3.7.1 |
| github.com/traefik/traefik/v3Go | 3.7.0 ≤ v < 3.7.1, v < 3.6.17 | 3.7.1, 3.6.17 |
| github.com/traefik/traefik/v2Go | v < 2.11.46 | 2.11.46 |
| github.com/traefik/traefikGo | v ≤ 1.7.34, No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.