CVE-2026-111911
Critical · CVSS 9.3Published 2026-10-17
CVSS
9.3
Critical
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-111911?
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, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.
CVSS Score Explained
CVSS 9.3 is Critical — the highest severity tier. Attackers can likely exploit this remotely with no authentication and cause full system compromise. Patch immediately.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-g6cq-6rqg-6c9p
- ›https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-rg9h-f29v-xhxr
- ›https://www.vulncheck.com/advisories/phpmyfaq-4.0.0-before-4.1.9-authentication-bypass-via-webauthn-credential-injection
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