CVE-2026-57996
HIGHphpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-r2f4-v277-hvw9)
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
Third Party Advisory third-party-advisory
VulnCheck Advisory: phpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint
Scores
CVSS v3
8.8
EPSS
0.0025
EPSS Percentile
16.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-269
Status
published
Products (2)
phpMyFAQ/phpMyFAQ
< 4.1.5
phpMyFAQ/phpMyFAQ
4.1.5
Published
Jul 15, 2026
Tracked Since
Jul 15, 2026