CVE-2026-30851

{"id": "CVE-2026-30851", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2026-03-07T17:15:52.540", "references": [{"url": "https://github.com/caddyserver/caddy/issues/6610", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/caddyserver/caddy/pull/6608", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/caddyserver/caddy/pull/7545", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/caddyserver/caddy/security/advisories/GHSA-7r4p-vjf4-gxv4", "tags": ["Exploit", "Mitigation", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-345"}]}], "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."}, {"lang": "es", "value": "Caddy es una plataforma de servidor extensible que utiliza TLS por defecto. Desde la versi\u00f3n 2.10.0 hasta antes de la versi\u00f3n 2.11.2, forward_auth copy_headers no elimina los encabezados proporcionados por el cliente, permitiendo la inyecci\u00f3n de identidad y la escalada de privilegios. Este problema ha sido parcheado en la versi\u00f3n 2.11.2."}], "lastModified": "2026-03-11T13:06:25.083", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CD3D5EC2-EC73-4F75-841D-E2A30A0410B2", "versionEndExcluding": "2.11.2", "versionStartIncluding": "2.10.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}