Vulnerability DatabaseCVE-2026-57996
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CVE-2026-57996
Published:July 15, 2026
Updated:August 04, 2026
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.
Affected Packages
phpmyfaq/phpmyfaq (PHP):
Affected version(s) >=dev-add-claude-github-actions-1771752359307 <4.1.5
Fix Suggestion:
Update to version 4.1.5
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57996.json
https://nvd.nist.gov/vuln/detail/CVE-2026-57996
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
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Privilege Management
CWE-269
EPSS
Base Score:
0.25