Cross-site request forgery (CSRF) vulnerability in the pieforms implementation in Mahara before 1.3.6 allows remote attackers to hijack the authentication of arbitrary users for requests to any form, related to inappropriate regeneration of session keys.
https://launchpad.net/mahara/+milestone/1.3.6
https://launchpad.net/mahara/+bug/771598
https://exchange.xforce.ibmcloud.com/vulnerabilities/67398
http://www.securityfocus.com/bid/47798