{"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":0.00565,"exploited":false,"fixed_versions":["2.11.42"],"ghsa_id":"GHSA-qr99-7898-vr7c","id":"tcs_01M5KFKG7FX36WPAS2811E3M95","modified_at":"2026-09-10T03:51:00.751092882Z","published_at":"2026-03-27T20:35:53Z","references":["https://osv.dev/vulnerability/GHSA-qr99-7898-vr7c","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","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":"medium"},"sources":[{"source":"osv","source_id":"GHSA-qr99-7898-vr7c","url":"https://osv.dev/vulnerability/GHSA-qr99-7898-vr7c"}],"summary":"Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField"}