---
id: CVE-2026-111891
title: >-
  phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via Group
  Permissions API
summary: >-
  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 a…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-269
vendor: thorsten
product: phpMyFAQ
affected:
  - phpMyFAQ >= 4.2.0-alpha.2 < 4.2.0-beta
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T18:46:15.227Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111891'
references:
  - url: >-
      https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6vf7-mrj2-7c37
    label: GitHub Security Advisory (GHSA-6vf7-mrj2-7c37)
  - url: >-
      https://www.vulncheck.com/advisories/phpmyfaq-from-4.2.0-alpha.2-before-4.2.0-beta-privilege-escalation-via-group-permissions-api
    label: >-
      VulnCheck Advisory: phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta
      Privilege Escalation via Group Permissions API
tags:
  - cve.org
ingestedAt: '2026-10-17T19:08:56.953Z'
---

## Overview

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.

## Affected

- `phpMyFAQ >= 4.2.0-alpha.2 < 4.2.0-beta`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.