CVE-2026-44774
CVE-2026-44774 · Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST provider despite providers.rest.insecure=false
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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.
CVSS 6.4 · Mittel · EPSS 0,5%
- Veröffentlicht
- Aktualisiert
Technologie-Stack: web
Betroffene Produkte und Versionen
traefik
- Softwareversionen
- < 2.11.46: Betroffen
- >= 3.0.0-beta1, < 3.6.17: Betroffen
- >= 3.7.0-rc.0, < 3.7.1: Betroffen
Keine Korrektur veröffentlicht
Originalquellen
- https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc
- https://github.com/traefik/traefik/releases/tag/v2.11.46
- https://github.com/traefik/traefik/releases/tag/v3.6.17
- https://github.com/traefik/traefik/releases/tag/v3.7.1
- 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
- https://access.redhat.com/errata/RHSA-2026:36820
- https://nvd.nist.gov/vuln/detail/CVE-2026-44774