CVE-2023-28331: Moodle

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Affected products

• Moodle Moodle: after 3.9.0, before 3.9.20 (fixed in 3.9.20); after 3.11.0, before 3.11.13 (fixed in 3.11.13); after 4.0.0, before 4.0.7 (fixed in 4.0.7); version 3.9.0 only; version 3.11.0 only; version 4.0.0 only; …

Published 2023-03-23. Last modified 2026-06-17.