CVE-2026-111891

phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in the group permission API, whose updatePermissions and updateMembers endpoints check held rights without regard to language or category scope and write unrestricted group grants. Non-superadmin administrators holding GROUP_EDIT can grant a group a right they hold only in a narrow scope and self-join it via updateMembers, gaining unrestricted FAQ create, edit, and publish access across all languages and categories.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6vf7-mrj2-7c37
https://www.vulncheck.com/advisories/phpmyfaq-from-4.2.0-alpha.2-before-4.2.0-beta-privilege-escalation-via-group-permissions-api

Configurations

No configuration.

History

17 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-17 19:16

Updated : 2026-10-19 17:17

NVD link : CVE-2026-111891

Mitre link : CVE-2026-111891

CVE.ORG link : CVE-2026-111891

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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