{"action":"Upgrade github.com/traefik/traefik/v2 to 2.11.42 or later.","affected":[{"fixed":"2.11.42","introduced":"0"}],"component":"github.com/traefik/traefik/v2","cve_ids":["CVE-2026-33433"],"ecosystem":"Go","epss":0.00487,"exploited":false,"fixed_versions":["2.11.42"],"ghsa_id":"GHSA-qr99-7898-vr7c","id":"tcs_01M5KGGTPN9PE0T5K5SQ1RNCVV","modified_at":"2026-04-07T03:44:12.500703481Z","published_at":"2026-04-02T18:42:30Z","references":["https://osv.dev/vulnerability/GO-2026-4893","https://github.com/traefik/traefik/security/advisories/GHSA-qr99-7898-vr7c","https://nvd.nist.gov/vuln/detail/CVE-2026-33433","https://github.com/traefik/traefik/releases/tag/v2.11.42","https://github.com/traefik/traefik/releases/tag/v3.6.11","https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.3"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GO-2026-4893#Go/github.com/traefik/traefik/v2","url":"https://osv.dev/vulnerability/GO-2026-4893"},{"source":"nvd","source_id":"CVE-2026-33433","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33433"}],"summary":"Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField in github.com/traefik/traefik"}