---
id: CVE-2026-111894
title: >-
  phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Stored XSS via
  iframe data: URI
summary: >-
  phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains a
  stored cross-site scripting vulnerability that allows authenticated content
  authors to inject JavaScript by embedding iframes with data:text/html sources
  in FAQ or …
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'
cvssSource: cna
cwe:
  - CWE-79
vendor: thorsten
product: phpMyFAQ
affected:
  - phpMyFAQ >= 3.2.1 < 4.1.9
  - phpMyFAQ >= 4.2.0-alpha < 4.2.0-beta
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T18:46:17.887Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111894'
references:
  - url: >-
      https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-fg92-v5rr-4xjq
    label: GitHub Security Advisory (GHSA-fg92-v5rr-4xjq)
  - url: >-
      https://www.vulncheck.com/advisories/phpmyfaq-3.2.1-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-stored-xss-via-iframe-data-uri
    label: >-
      VulnCheck Advisory: phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before
      4.2.0-beta Stored XSS via iframe data: URI
tags:
  - cve.org
ingestedAt: '2026-10-17T19:08:56.937Z'
---

## Overview

phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability that allows authenticated content authors to inject JavaScript by embedding iframes with data:text/html sources in FAQ or News content. Attackers can bypass the hostless media-host allowlist in FaqHelper::cleanUpContent(), which is rendered via Twig's raw filter, to run phishing interfaces or top-frame redirects for viewers.

## Affected

- `phpMyFAQ >= 3.2.1 < 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.