CVE-2023-28330: Moodle

Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.

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.