---
id: CVE-2026-111887
title: >-
  phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Account Enumeration
  via Guest Comment Endpoint
summary: >-
  phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an account
  enumeration vulnerability that allows unauthenticated attackers to confirm
  registered display names and emails via a distinct HTTP 409 response.
  Attackers can su…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-204
vendor: thorsten
product: phpMyFAQ
affected:
  - phpMyFAQ < 4.1.9
  - phpMyFAQ >= 4.2.0-alpha < 4.2.0-beta
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T18:46:12.494Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111887'
references:
  - url: >-
      https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7
    label: GitHub Security Advisory (GHSA-pgxw-7c68-83w7)
  - url: >-
      https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-account-enumeration-via-guest-comment-endpoint
    label: >-
      VulnCheck Advisory: phpMyFAQ before 4.1.9 and 4.2.0-alpha before
      4.2.0-beta Account Enumeration via Guest Comment Endpoint
tags:
  - cve.org
ingestedAt: '2026-10-17T19:08:56.985Z'
---

## Overview

phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an account enumeration vulnerability that allows unauthenticated attackers to confirm registered display names and emails via a distinct HTTP 409 response. Attackers can submit guest comments to the comment create endpoint with candidate user and mail values to link names to emails for targeted phishing.

## Affected

- `phpMyFAQ < 4.1.9`
- `phpMyFAQ >= 4.2.0-alpha < 4.2.0-beta`

## Remediation

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