CVE-2025-62400: Moodle

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Moodle exposed the names of hidden groups to users who had permission to create calendar events but not to view hidden groups. This could reveal private or restricted group information.

Affected products

• Moodle Moodle: from 4.1.0, before 4.1.21 (fixed in 4.1.21); from 4.4.0, before 4.4.11 (fixed in 4.4.11); from 4.5.0, before 4.5.7 (fixed in 4.5.7); from 5.0.0, before 5.0.3 (fixed in 5.0.3)

Published 2025-10-23. Last modified 2026-06-17.