In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, the account associated with a web services token is vulnerable to being exploited and logged into, resulting in information disclosure (at a minimum) and often escalation of privileges.
In Mahara 19.04 before 19.04.6, 19.10 before 19.10.4, and 20.04 before 20.04.1, certain places could execute file or folder names containing JavaScript.
In Mahara 19.04 before 19.04.5 and 19.10 before 19.10.3, account details are shared in the Elasticsearch results for accounts that are not accessible when the config setting 'Isolated institutions' is turned on.