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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/traefik/traefik/v3Go | >= 3.7.0, < 3.7.1 | 3.7.1 |
github.com/traefik/traefik/v3Go | < 3.6.17 | 3.6.17 |
github.com/traefik/traefik/v2Go | < 2.11.46 | 2.11.46 |
github.com/traefik/traefikGo | <= 1.7.34 | — |
Affected products
4- osv-coords2 versionspkg:rpm/opensuse/traefik2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/traefik&distro=openSUSE%20Tumbleweed
< 2.11.46-1.1+ 1 more
- (no CPE)range: < 2.11.46-1.1
- (no CPE)range: < 3.6.17-1.1
Patches
Vulnerability mechanics
References
6- github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjcnvdExploitPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-96qj-4jj5-wcjcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44774ghsaADVISORY
- github.com/traefik/traefik/releases/tag/v2.11.46nvdProductRelease NotesWEB
- github.com/traefik/traefik/releases/tag/v3.6.17nvdProductRelease NotesWEB
- github.com/traefik/traefik/releases/tag/v3.7.1nvdProductRelease NotesWEB
News mentions
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