PT-2026-116481 · Thorsten · Phpmyfaq

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CVE-2026-111911

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Published

2026-10-17

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Updated

2026-10-18

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

Fix

Improper Authentication

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Weakness Enumeration

Related Identifiers

CVE-2026-111911

Affected Products

Phpmyfaq