{"id":"GO-2026-6203","summary":"Traefik: `allowCrossNamespace=false` bypass via `@kubernetescrd` TraefikService backendRef in github.com/traefik/traefik","details":"Traefik: `allowCrossNamespace=false` bypass via `@kubernetescrd` TraefikService backendRef in github.com/traefik/traefik","aliases":["CVE-2026-71325","GHSA-62fc-8686-hfmq"],"modified":"2026-08-18T15:00:24.540873843Z","published":"2026-08-18T14:32:29Z","database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-6203"},"references":[{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmq"},{"type":"FIX","url":"https://github.com/traefik/traefik/commit/65ebf4b47fbdc33e3856803a5844a404e094d52d"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v2.11.54"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.6.25"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.7.10"}],"affected":[{"package":{"name":"github.com/traefik/traefik","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6203.json"}},{"package":{"name":"github.com/traefik/traefik/v2","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.54"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6203.json"}},{"package":{"name":"github.com/traefik/traefik/v3","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.6.25"},{"introduced":"3.7.0"},{"fixed":"3.7.10"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6203.json"}}],"schema_version":"1.9.0"}