All vulnerabilities
CVE-2026-111903GHSA-j3v5-p957-w6gq

phpMyFAQ 4.2.0-alpha before 4.2.0-beta Stored XSS via SVG DTD Entity Bypass

thorsten phpMyFAQ
Open in ThreatlineRecord JSON
CVSS
5.1Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.2.0-betaFixed versionCVE List
Published17 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability in SvgSanitizer that allows users with FAQ_EDIT permission to bypass sanitization using XML DTD custom entities. Attackers can upload an SVG defining an entity that expands to javascript in an anchor href, executing script when viewers click it to hijack admin sessions.

Text from CVE List

Affected versions 2

  • phpMyFAQaffected: 4.2.0-alpha before 4.2.0-betaCVE List
  • phpMyFAQunaffected: 4.2.0-betaCVE List

References 2