CVE-2026-102581

A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post.

  • Published Sep 30, 2026
  • CVSS 5.4 medium
  • 0.2% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

CVE-2026-102581 at the National Vulnerability Database