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 15.04 before 15.04.15, 16.04 before 16.04.9, 16.10 before 16.10.6, and 17.04 before 17.04.4 are vulnerable to a user submitting a potential dangerous payload, e.g., XSS code, to be saved as their first name, last name, or display name in the profile fields that can cause issues such as escalation of privileges or unknown execution of malicious code when replying to messages in Mahara.
Mahara 15.04 before 15.04.15, 16.04 before 16.04.9, 16.10 before 16.10.6, and 17.04 before 17.04.4 are vulnerable to a user submitting a potential dangerous payload, e.g., XSS code, to be saved as titles in internal artefacts.