Privilege Escalation in phpMyFAQ Affects Admin Access Control
CVE-2026-111890

7HIGH

Key Information:

Vendor

Thorsten

Status
pHPMyFAQ
Vendor
CVE Published:
17 October 2026

What is CVE-2026-111890?

A privilege escalation vulnerability exists in phpMyFAQ versions prior to the beta release, affecting the UserController::updateUserRights functionality. This flaw allows administrators with USER_EDIT permissions to bypass previously set language restrictions. By submitting language-specific rights via the update-rights API, they can unlawfully gain full access to create, edit, and publish FAQs in any supported language, leading to severe unauthorized access risks.

Affected Version(s)

phpMyFAQ 4.2.0-alpha.2 < 4.2.0-beta

phpMyFAQ 4.2.0-beta

References

https://github.com/thorsten/phpMyFAQ/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha...
third-party-advisory

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

manus-pi
manus-use
.