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.
An issue was discovered in Mahara before 18.10.0. It mishandled user requests that could discontinue a user's ability to maintain their own account (changing username, changing primary email address, deleting account). The correct behavior was to either prompt them for their password and/or send a warning to their primary email address.
Mahara before 1.5.13, 1.6.x before 1.6.8, and 1.7.x before 1.7.4 does not properly restrict access to folders, which allows remote authenticated users to read arbitrary folders (1) by leveraging an active folder tab loaded before permissions were removed or (2) via the folder parameter to artefact/file/groupfiles.php.