{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-30851","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-05T21:27:35.341Z","datePublished":"2026-03-07T16:28:37.097Z","dateUpdated":"2026-03-09T18:24:49.691Z"},"containers":{"cna":{"title":"Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/caddyserver/caddy/security/advisories/GHSA-7r4p-vjf4-gxv4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-7r4p-vjf4-gxv4"},{"name":"https://github.com/caddyserver/caddy/issues/6610","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/issues/6610"},{"name":"https://github.com/caddyserver/caddy/pull/6608","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/pull/6608"},{"name":"https://github.com/caddyserver/caddy/pull/7545","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/pull/7545"}],"affected":[{"vendor":"caddyserver","product":"caddy","versions":[{"version":">= 2.10.0, < 2.11.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-07T16:28:37.097Z"},"descriptions":[{"lang":"en","value":"Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version 2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and privilege escalation. This issue has been patched in version 2.11.2."}],"source":{"advisory":"GHSA-7r4p-vjf4-gxv4","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-09T17:58:58.176957Z","id":"CVE-2026-30851","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-09T18:24:49.691Z"}}]}}