Vulnerability · Published Jul 15, 2026 · Assigned by VulnCheck

CVE-2026-57996phpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint

High 8.8

In plain English

A high-severity privilege mismanagement in phpMyFAQ from phpMyFAQ. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 61.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
phpMyFAQ	phpMyFAQ	0 – before 4.1.5

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-r2f4-v277-hvw9) vendor-advisory
VulnCheck Advisory: phpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint third-party-advisory