{"id":"CVE-2026-111911","title":"phpMyFAQ 4.0.0 before 4.1.9 Authentication Bypass via WebAuthn Credential Injection","summary":"phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, su…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-287"],"vendor":"thorsten","product":"phpMyFAQ","affected":["phpMyFAQ >= 4.0.0 < 4.1.9"],"published":"2026-10-17","updated":"2026-10-17","sourceUpdated":"2026-10-17T18:46:28.833Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111911","references":[{"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-g6cq-6rqg-6c9p","label":"GitHub Security Advisory (GHSA-g6cq-6rqg-6c9p)"},{"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg9h-f29v-xhxr","label":"GitHub Security Advisory (GHSA-rg9h-f29v-xhxr)"},{"url":"https://www.vulncheck.com/advisories/phpmyfaq-4.0.0-before-4.1.9-authentication-bypass-via-webauthn-credential-injection","label":"VulnCheck Advisory: phpMyFAQ 4.0.0 before 4.1.9 Authentication Bypass via WebAuthn Credential Injection"}],"tags":["cve.org"],"ingestedAt":"2026-10-17T19:08:56.749Z","slug":"CVE-2026-111911","body":"## Overview\n\nphpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.\n\n## Affected\n\n- `phpMyFAQ >= 4.0.0 < 4.1.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}