In moodle, insufficient capability checks could lead to users with the ability to course restore adding additional capabilities to roles within that course. Versions affected: 3.9 to 3.9.2, 3.8 to 3.8.5, 3.7 to 3.7.8, 3.5 to 3.5.14 and earlier unsupported versions. This is fixed in moodle 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

In moodle, some database module web services allowed students to add entries within groups they did not belong to. Versions affected: 3.9 to 3.9.2, 3.8 to 3.8.5, 3.7 to 3.7.8, 3.5 to 3.5.14 and earlier unsupported versions. This is fixed in moodle 3.8.6, 3.7.9, 3.5.15, and 3.10.

In Moodle, it was possible to include JavaScript when re-naming content bank items. Versions affected: 3.9 to 3.9.2. This is fixed in moodle 3.9.3 and 3.10.

A flaw was found in Moodle versions 3.8 before 3.8.3, 3.7 before 3.7.6, 3.6 before 3.6.10, 3.5 before 3.5.12 and earlier unsupported versions. It was possible to create a SCORM package in such a way that when added to a course, it could be interacted with via web services in order to achieve remote code execution.

A vulnerability was found in Moodle versions 3.7 before 3.7.3, 3.6 before 3.6.7, 3.5 before 3.5.9 and earlier. OAuth 2 providers who do not verify users' email address changes require additional verification during sign-up to reduce the risk of account compromise.

A vulnerability was found in Moodle 3.7 before 3.73, 3.6 before 3.6.7 and 3.5 before 3.5.9, where a reflected XSS possible from some fatal error messages.

A vulnerability was found in Moodle 3.7 to 3.7.3, 3.6 to 3.6.7, 3.5 to 3.5.9 and earlier where an open redirect existed in the Lesson edit page.

A vulnerability was found in Moodle 3.6 before 3.6.7 and 3.7 before 3.7.3, where tokens used to fetch inline atachments in email notifications were not disabled when a user's account was no longer active. Note: to access files, a user would need to know the file path, and their token.

A vulnerability was found in moodle 3.7 before 3.7.3, where there is blind XSS reflected in some locations where user email is displayed.

Moodle before version 3.7.2 is vulnerable to information exposure of service tokens for users enrolled in the same course.