Privilege Escalation in phpMyFAQ Affects User Rights Management
CVE-2026-56396

8.7HIGH

Key Information:

Vendor

pHPMyFAQ

Status
pHPMyFAQ
Vendor
CVE Published:
21 June 2026

What is CVE-2026-56396?

A vulnerability exists in phpMyFAQ versions prior to 4.1.4 where the editUser() and updateUserRights() endpoints do not properly enforce authorization checks. This allows authenticated non-SuperAdmin administrators to manipulate user privileges, including the ability to set the is_superadmin flag or grant arbitrary rights, effectively escalating their access to SuperAdmin status. This shortcoming poses a risk as it undermines the intended access control mechanisms, allowing for unauthorized privilege modifications.

Affected Version(s)

phpMyFAQ 0 < 4.1.4

phpMyFAQ 4.1.4

References

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

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

SnailSploit
0xShemesh
.