CVE-2021-32478: Moodle

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

The redirect URI in the LTI authorization endpoint required extra sanitizing to prevent reflected XSS and open redirect risks. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8 and earlier unsupported versions are affected.

Affected products

• Moodle Moodle: before 3.8.9 (fixed in 3.8.9); from 3.9.0, before 3.9.7 (fixed in 3.9.7); from 3.10.0, before 3.10.4 (fixed in 3.10.4)

Published 2022-03-11. Last modified 2026-06-17.