{"id":"CVE-2026-111898","title":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta Account Takeover via Keycloak Implicit Account Linking","summary":"phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows Keycloak users to take over local accounts by matching preferred_username or email. Attackers controlling a Keycloak identity with a colli…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-287"],"vendor":"thorsten","product":"phpMyFAQ","affected":["phpMyFAQ >= 4.2.0-alpha < 4.2.0-beta"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-18T11:21:08.495937Z"},"exploitAvailable":true,"published":"2026-10-17","updated":"2026-10-18","sourceUpdated":"2026-10-18T11:21:21.852Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111898","references":[{"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg4w-2j3r-2hhp","label":"GitHub Security Advisory (GHSA-rg4w-2j3r-2hhp)"},{"url":"https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha-before-4.2.0-beta-account-takeover-via-keycloak-implicit-account-linking","label":"VulnCheck Advisory: phpMyFAQ 4.2.0-alpha before 4.2.0-beta Account Takeover via Keycloak Implicit Account Linking"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-17T19:08:56.953Z","slug":"CVE-2026-111898","body":"## Overview\n\nphpMyFAQ 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows Keycloak users to take over local accounts by matching preferred_username or email. Attackers controlling a Keycloak identity with a colliding username or unverified email can log in through /auth/keycloak/authorize to bind their subject and gain superadmin privileges.\n\n## Affected\n\n- `phpMyFAQ >= 4.2.0-alpha < 4.2.0-beta`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":224028,"id":"CVE-2026-111898","ts":1792323682842,"field":"exploit_available","old":"false","new":"true"}]}