Moodle 3.9.x < 3.9.19 Multiple Vulnerabilities

The version of Moodle installed on the remote host is 3.9.x prior to 3.9.19, 3.11.x prior to 3.11.12, 4.0.x prior to 4.0.6 or 4.1.x prior to 4.1.1. It is, therefore, affected by multiple vulnerabilities: - A Cross-Site Scripting XSS vulnerability due to the lack of sanitization of some returnurl...