---
id: CVE-2026-85593
title: >-
  phpMyFAQ versions before 4.1.8 contain a stored cross-site scripting
  vulnerability in FaqHelper::convertOldInternalLinks() that calls
  html_entity_decode() on sanitized FAQ content, reversing entity-encoding
  protection
summary: >-
  phpMyFAQ versions before 4.1.8 contain a stored cross-site scripting
  vulnerability in FaqHelper::convertOldInternalLinks() that calls
  html_entity_decode() on sanitized FAQ content, reversing entity-encoding
  protection. Authenticated user…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: thorsten
product: phpMyFAQ
affected:
  - phpMyFAQ < 4.1.8
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T14:17:15.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85593'
references:
  - url: >-
      https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-x6qj-5jhf-xgpm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-stored-xss-via-html-entity-decode
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T13:24:53.885925Z'
epss: 0.00138
epssPercentile: 0.03572
ingestedAt: '2026-09-08T20:10:03.165Z'
---

## Overview

phpMyFAQ versions before 4.1.8 contain a stored cross-site scripting vulnerability in FaqHelper::convertOldInternalLinks() that calls html_entity_decode() on sanitized FAQ content, reversing entity-encoding protection. Authenticated users with FAQ editing privileges can inject JavaScript payloads that execute in the browsers of all users viewing the affected FAQ pages.

## Remediation

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