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CVE-2026-57996 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9	CISA-ADP	AdvisoryTechnical AnalysisVendor
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9	[email protected]	AdvisoryTechnical AnalysisVendor
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-269	Improper Privilege Management	[email protected]

Affected Products

Product	Versions
phpMyFAQ	<= 4.1.4 (semver)
CPE cpe:2.3:a:phpmyfaq:phpmyfaq:::::::: Remediation Upgrade: 4.1.5moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 16, 2026	CVE Modified	CISA-ADP
Jul 15, 2026	New CVE Received	[email protected]