In Mahara before 20.10.5, 21.04.4, 21.10.2, and 22.04.0, a site using Isolated Institutions is vulnerable if more than ten groups are used. They are all shown from page 2 of the group results list (rather than only being shown for the institution that the viewer is a member of).

Mahara before 20.10.5, 21.04.4, 21.10.2, and 22.04.0 allows stored XSS when a particular Cascading Style Sheets (CSS) class for embedly is used, and JavaScript code is constructed to perform an action.

Mahara before 20.10.5, 21.04.4, 21.10.2, and 22.04.0 is vulnerable to Cross Site Request Forgery (CSRF) because randomly generated tokens are too easily guessable.

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 before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, exported CSV files could contain characters that a spreadsheet program could interpret as a command, leading to execution of a malicious string locally on a device, aka CSV injection.

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 1.9 before 1.9.8 and 1.10 before 1.10.6 and 15.04 before 15.04.3 are vulnerable to perform a cross-site request forgery (CSRF) attack on the uploader contained in Mahara's filebrowser widget. This could allow an attacker to trick a Mahara user into unknowingly uploading malicious files into their Mahara account.

Mahara 1.9 before 1.9.7 and 1.10 before 1.10.5 and 15.04 before 15.04.2 are vulnerable to the arbitrary execution of Javascript in the browser of a logged-in user because the title of the portfolio page was not being properly escaped in the AJAX script that updates the Add/remove watchlist link on artefact detail pages.

Mahara 1.9 before 1.9.7 and 1.10 before 1.10.5 and 15.04 before 15.04.2 are vulnerable to anonymous comments being able to be placed on artefact detail pages even when the site administrator had disallowed anonymous comments.

Mahara 1.9 before 1.9.6 and 1.10 before 1.10.4 and 15.04 before 15.04.1 are vulnerable to a site admin or institution admin being able to place HTML and Javascript into an institution display name, which will be displayed to other users unescaped on some Mahara system pages.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable to users receiving watchlist notifications about pages they do not have access to anymore.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable to users being able to delete their submitted page through URL manipulation.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable to a maliciously created .xml file that can have its code executed when user tries to download the file.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable to server-side request forgery attacks as not all processes of curl redirects are checked against a white or black list. Employing SafeCurl will prevent issues.

Mahara 1.8 before 1.8.6 and 1.9 before 1.9.4 and 1.10 before 1.10.1 and 15.04 before 15.04.0 are vulnerable to old sessions not being invalidated after a password change.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable as logged-in users can stay logged in after the institution they belong to is suspended.

Mahara 1.8 before 1.8.6 and 1.9 before 1.9.4 and 1.10 before 1.10.1 and 15.04 before 15.04.0 are vulnerable because group members can lose access to the group files they uploaded if another group member changes the access permissions on them.

Mahara 1.8 before 1.8.7 and 1.9 before 1.9.5 and 1.10 before 1.10.3 and 15.04 before 15.04.0 are vulnerable to a maliciously created .swf files that can have its code executed when a user tries to download the file.