CVE-2026-124432
Published:November 08, 2026
Updated:November 09, 2026
phpMyFAQ 4.1.9 before 4.1.11 and 4.2.0 pre-releases before 4.2.0-beta.3 contain an account enumeration vulnerability in the unauthenticated POST /api/webauthn/prepare-login endpoint, which returns stable stored credential IDs for passkey-registered accounts but an md5(time())-derived fallback ID otherwise. Unauthenticated attackers can compare allowCredentials IDs from requests sent more than one second apart, without rate limiting, to identify existing passkey-registered accounts and their credential IDs.
Affected Packages
https://github.com/thorsten/phpMyFAQ.git (GITHUB):
Affected version(s) =4.0.0-RC <4.1.11 || >=4.0.0-beta.2 <4.1.11 || >=4.1.0-alpha <4.1.11Fix Suggestion:
Update to version 4.1.11https://github.com/thorsten/phpMyFAQ.git (GITHUB):
Affected version(s) >=4.0-nightly-2024-10-29 <4.2.0-beta.3 || >=4.1-nightly-2025-12-20 <4.2.0-beta.3 || >=development-nightly-2024-09-12 <4.2.0-beta.3 || >=4.2.0-alpha <4.2.0-beta.3Fix Suggestion:
Update to version 4.2.0-beta.3thorsten/phpmyfaq (PHP):
Affected version(s) >=4.2.0-alpha <4.2.0-beta.3Fix Suggestion:
Update to version 4.2.0-beta.3thorsten/phpmyfaq (PHP):
Affected version(s) >=4.0.0-beta.2 <4.1.11 || =4.0.0-RC <4.1.11Fix Suggestion:
Update to version 4.1.11Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Observable Response Discrepancy
EPSS
Base Score:
0.32