CVE-2026-111882 thorsten CVE debrief

Who should care

Defenders responsible for phpMyFAQ instances, particularly those exposed to untrusted networks or with administrator accounts, should assess their exposure and implement compensating controls to prevent unauthorized access.

Why it matters

CVE-2026-111882 is an authentication bypass vulnerability in phpMyFAQ that allows IdP-authenticated users to skip TOTP two-factor authentication, potentially leading to unauthorized access. Defenders should prioritize verifying exposure, reviewing authentication configurations, and implementing compensating controls.

• Potential unauthorized access to phpMyFAQ instances
• Bypass of TOTP two-factor authentication
• Possible exploitation by attackers with valid or phished IdP identities
• Need for verification of instance exposure and authentication configurations

Technical summary

The vulnerability allows IdP-authenticated users to skip TOTP two-factor authentication through Keycloak and Entra ID SSO callbacks in phpMyFAQ versions 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta, potentially allowing attackers with a valid or phished IdP identity to obtain a fully authenticated session, including administrator accounts. This could lead to unauthorized access and exploitation by attackers. Defenders should prioritize verifying exposure, reviewing authentication configurations, and implementing compensating controls.

Defensive priority

Defenders should prioritize verifying exposure of phpMyFAQ instances to untrusted networks, reviewing authentication and authorization configurations, and implementing compensating controls to detect and prevent unauthorized access.

Recommended defensive actions

• Verify phpMyFAQ instance exposure to untrusted networks
• Review authentication and authorization configurations
• Implement compensating controls to detect and prevent unauthorized access
• Monitor for suspicious activity
• Update to a fixed version when available

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in phpMyFAQ versions 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta, but the scope of affected versions and potential impact require further verification from official sources. Specifically, defenders should verify exposure of phpMyFAQ instances to untrusted networks and review authentication configurations. Evidence from the CVE Program and NVD suggests that IdP-authenticated users can skip TOTP two-factor authentication through Keycloak and Entra ID SSO,

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.