{"id":"CVE-2026-128023","summary":"FrankenPHP before 1.13.0 Authentication Bypass via Dot-Form Header Name Aliasing","details":"FrankenPHP before 1.13.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to spoof trusted headers by sending dot-form header names that PHP rewrites to underscores. Attackers can send headers like X.Authenticated.User or X.Forwarded.For that map to $_SERVER keys, spoofing user identity, client IP, or scheme.","aliases":["GHSA-qcrp-8483-f2f2"],"modified":"2026-11-14T02:47:31.974201295Z","published":"2026-11-13T09:34:05.836Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128023.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-290"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128023.json"},{"type":"ADVISORY","url":"https://github.com/php/frankenphp/security/advisories/GHSA-qcrp-8483-f2f2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128023"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/frankenphp-before-1.13.0-authentication-bypass-via-dot-form-header-name-aliasing"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/php/frankenphp","events":[{"introduced":"0"},{"fixed":"233f793654acf53be41385a4a29ac5e126cf6701"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"1.13.0"}]}]}}],"versions":["v1.12.7","caddy/v1.12.7","v1.12.6","caddy/v1.12.6","v1.12.5","caddy/v1.12.5","v1.12.4","caddy/v1.12.4","v1.12.3","caddy/v1.12.3","v1.12.2","caddy/v1.12.2","v1.12.1","caddy/v1.12.1","v1.12.0","caddy/v1.12.0","v1.11.3","caddy/v1.11.3","v1.11.2","caddy/v1.11.2","v1.11.1","caddy/v1.11.1","v1.11.0","caddy/v1.11.0","v1.10.1","caddy/v1.10.1","v1.10.0","caddy/v1.10.0","v1.9.1","caddy/v1.9.1","v1.9.0","caddy/v1.9.0","v1.8.0","caddy/v1.8.0","v1.7.0","caddy/v1.7.0","v1.6.2","caddy/v1.6.2","v1.6.1","caddy/v1.6.1","v1.6.0","caddy/v1.6.0","v1.5.0","caddy/v1.5.0","v1.4.4","caddy/v1.4.4","v1.4.3","caddy/v1.4.3","v1.4.2","caddy/v1.4.2","v1.4.1","caddy/v1.4.1","v1.4.0","caddy/v1.4.0","v1.3.6","caddy/v1.3.6","v1.3.5","caddy/v1.3.5","v1.3.4","caddy/v1.3.4","v1.3.3","caddy/v1.3.3","v1.3.2","caddy/v1.3.2","v1.3.1","caddy/v1.3.1","v1.3.0","caddy/v1.3.0","v1.2.5","caddy/v1.2.5","v1.2.4","caddy/v1.2.4","v1.2.3","caddy/v1.2.3","v1.2.2","caddy/v1.2.2","v1.2.1","caddy/v1.2.1","v1.2.0","caddy/v1.2.0","v1.1.5","caddy/v1.1.5","v1.1.4","caddy/v1.1.4","v1.1.3","caddy/v1.1.3","v1.1.2","caddy/v1.1.2","v1.1.1","caddy/v1.1.1","v1.1.0","caddy/v1.1.0","v1.0.3","caddy/v1.0.3","v1.0.2","caddy/v1.0.2","v1.0.1","caddy/v1.0.1","v1.0.0","caddy/v1.0.0","v1.0.0-rc.4","caddy/v1.0.0-rc.4","v1.0.0-rc.3","caddy/v1.0.0-rc.3","v1.0.0-rc.2","caddy/v1.0.0-rc.2","v1.0.0-beta.2","caddy/v1.0.0-beta.2","v1.0.0-beta.1","caddy/v1.0.0-beta.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-128023.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}