CVE-2026-111911

CriticalCVSS 9.8/10Last modified Oct 19, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 17, 2026
Last modified
Oct 19, 2026
NVD status
Deferred

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CVE-2026-111911: Critical severity, CVSS 9.8 | Vulnix