{"action":"Upgrade github.com/traefik/traefik/v3 to 3.6.3 or later.","affected":[{"fixed":"3.6.3","introduced":"3.5.0"}],"component":"github.com/traefik/traefik/v3","cve_ids":["CVE-2025-66491"],"ecosystem":"Go","epss":0.00221,"exploited":false,"fixed_versions":["3.6.3"],"ghsa_id":"GHSA-7vww-mvcr-x6vj","id":"tcs_01M5KGC8MJGZCJMY7G03KDT3JM","modified_at":"2026-07-02T14:44:24.399738422Z","published_at":"2025-12-15T19:37:35Z","references":["https://osv.dev/vulnerability/GO-2025-4205","https://github.com/traefik/traefik/security/advisories/GHSA-7vww-mvcr-x6vj","https://nvd.nist.gov/vuln/detail/CVE-2025-66491","https://github.com/traefik/traefik/commit/14a1aedf5704673d875d210d7bacf103a43c77e4","https://github.com/traefik/traefik/releases/tag/v3.6.3"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GO-2025-4205#Go/github.com/traefik/traefik/v3","url":"https://osv.dev/vulnerability/GO-2025-4205"},{"source":"nvd","source_id":"CVE-2025-66491","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66491"}],"summary":"Traefik Inverted TLS Verification Logic in ingress-nginx Provider in github.com/traefik/traefik"}