{"schema_version":"1.3.1","id":"GO-2026-4893","modified":"2026-04-02T18:42:30Z","published":"2026-04-02T18:42:30Z","aliases":["CVE-2026-33433","GHSA-qr99-7898-vr7c"],"summary":"Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField in github.com/traefik/traefik","details":"Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField in github.com/traefik/traefik","affected":[{"package":{"name":"github.com/traefik/traefik","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{}},{"package":{"name":"github.com/traefik/traefik/v2","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.42"}]}],"ecosystem_specific":{}},{"package":{"name":"github.com/traefik/traefik/v3","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0-beta1"},{"fixed":"3.6.12"},{"introduced":"3.7.0-ea.1"},{"fixed":"3.7.0-ea.3"}]}],"ecosystem_specific":{}}],"references":[{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-qr99-7898-vr7c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33433"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v2.11.42"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.6.11"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.3"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4893","review_status":"UNREVIEWED"}}