CVE-2026-57996 · Symaro Security Advisory

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.

Severity (CVSS)

Base score	8.7
Severity	High
Version	CVSS 4.0
Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Provided by	CNA

Weaknesses

CWE-269 — Improper Privilege Management

Affected products

Vendor	Product	Versions
phpMyFAQ	phpMyFAQ	0 to <4.1.5; 4.1.5

References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9 (vendor-advisory)
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 16 Jul 2026 07:01 UTC.