CVE-2026-57996

phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and attacker-chosen credentials to create a SuperAdmin account, then authenticate as that account to achieve full instance takeover.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-15 12:18

Updated : 2026-07-16 16:19

NVD link : CVE-2026-57996

Mitre link : CVE-2026-57996

CVE.ORG link : CVE-2026-57996

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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