Moodle before 2.2.2 has a password and web services issue where when the user profile is updated the user password is reset if not specified.

Moodle has a database activity export permission issue where the export function of the database activity module exports all entries even those from groups the user does not belong to

Moodle before 2.2.2 has a course information leak in gradebook where users are able to see hidden grade items in export

Moodle before 2.2.2: Overview report allows users to see hidden courses

Moodle before 2.2.2 has users' private files included in course backups

Moodle before 2.2.2: Course information leak via hidden courses being displayed in tag search results

Moodle before 2.2.2 has a default repository capabilities issue where all repositories are viewable by all users by default

Moodle before 2.2.2 has Personal information disclosure, when administrative setting users name display is set to first name only full names are shown in page breadcrumbs.

Moodle before 2.2.2 has a permission issue in Forum Subscriptions where unenrolled users can subscribe/unsubscribe via mod/forum/index.php

Moodle before 2.2.2 has an external enrolment plugin context check issue where capability checks are not thorough