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.
Published:Oct 17, 2026
Last Modified:Oct 20, 2026
EPS:Oct 17, 2026
EPSS Score:0.00422
CVSS Score:9.8
Affected Products
Vendor
Product
Action
Vendor
Phpmyfaq
Product
Phpmyfaq
Phpmyfaq
Phpmyfaq
Vendor
Thorsten
Product
Phpmyfaq
Thorsten
Phpmyfaq
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
