phpMyFAQ 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows IdP-authenticated users to skip TOTP two-factor authentication through the Keycloak and Entra ID SSO callbacks. Attackers holding a valid or phished IdP identity linked to a 2FA-enabled account can complete the OIDC flow and obtain a fully authenticated session, including administrator accounts.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-43g3-pp5p-fg96
disclosure@vulncheck.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-8fvf-747v-qjr6
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-3.2.0-alpha-before-4.1.9-and-4.2.…
disclosure@vulncheck.com