CVE-2026-44774
Critical · 9.9CVSS
9.9
EPSS
0.5%
Published
May 15, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Tumbleweed | traefik | 0 | 3.6.17-1.1 |
| openSUSE:Tumbleweed | traefik2 | 0 | 2.11.46-1.1 |
Related vulnerabilities
- CVE-2026-48491 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-53622 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-48020 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-41181 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-41174 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-41263 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-35051 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik
- CVE-2026-39858 Traefik is an HTTP reverse proxy and load balancer. Also affects traefik