{"id":"CVE-2026-44774","aliases":["GHSA-96qj-4jj5-wcjc","GO-2026-5277"],"url":"https://o3.security/vulnerability/CVE-2026-44774","summary":"Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST provider despite providers.rest.insecure=false","details":"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":"2026-05-15T16:30:43.265Z","modified":"2026-08-07T11:51:10.992427747Z","cvss":null,"epss":{"score":0.00468,"percentile":0.38095,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/traefik/traefik/v3","fixedVersion":"3.7.1"},{"ecosystem":"Go","name":"github.com/traefik/traefik/v3","fixedVersion":"3.6.17"},{"ecosystem":"Go","name":"github.com/traefik/traefik/v2","fixedVersion":"2.11.46"},{"ecosystem":"Go","name":"github.com/traefik/traefik","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v2.11.46"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.6.17"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.7.1"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36820"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44774"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44774.json"},{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44774"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477937"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:10.992427747Z"}}