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 1.9.8 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 1.10 before 1.10.9 and 15.04 before 15.04.6 and 15.10 before 15.10.2 are vulnerable to XSS due to window.opener (target="_blank" and window.open())