Vulnerabilities CVE-2026-57996

CVE-2026-57996

High

Open

TLP:CLEAR

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

NVD CVE.org

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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.

Details

CVSS Score: 8.7
EPSS Score ⓘ: 0.25%

16.1th percentile
CVSS 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
Confidence: 90%
Published: Jul 15, 2026
Last Modified: Jul 15, 2026

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