Moodle · Moodle · CVE-2021-32478
**Name of the Vulnerable Software and Affected Versions**
Moodle versions 3.10 to 3.10.3
Moodle versions 3.9 to 3.9.6
Moodle versions 3.8 to 3.8.8
Moodle versions prior to 3.8
**Description**
The issue arises from insufficient sanitizing of user-provided data in the LTI authorization endpoint, leading to reflected XSS and open redirect risks. This could allow a remote attacker to perform cross-site scripting attacks.
**Recommendations**
For versions 3.10 to 3.10.3, update to a version that includes the necessary sanitizing of the redirect URI in the LTI authorization endpoint.
For versions 3.9 to 3.9.6, update to a version that includes the necessary sanitizing of the redirect URI in the LTI authorization endpoint.
For versions 3.8 to 3.8.8, update to a version that includes the necessary sanitizing of the redirect URI in the LTI authorization endpoint.
For versions prior to 3.8, update to a version that includes the necessary sanitizing of the redirect URI in the LTI authorization endpoint.