{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0","last_affected":"2.11.50"}],"component":"github.com/traefik/traefik/v2","cve_ids":["CVE-2026-54761"],"ecosystem":"Go","epss":0.00369,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-3g6v-2r68-prfc","id":"tcs_01M5KETVVMFVXQEWZJB5EZR528","modified_at":"2026-09-10T03:50:55.279272148Z","published_at":"2026-06-17T14:01:48Z","references":["https://osv.dev/vulnerability/GHSA-3g6v-2r68-prfc","https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc","https://nvd.nist.gov/vuln/detail/CVE-2026-54761","https://github.com/traefik/traefik","https://github.com/traefik/traefik/releases/tag/v3.6.21","https://github.com/traefik/traefik/releases/tag/v3.7.5"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-3g6v-2r68-prfc#Go/github.com/traefik/traefik/v2","url":"https://osv.dev/vulnerability/GHSA-3g6v-2r68-prfc"}],"summary":"Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services"}