Permissions, Privileges, and Access Controls
Mahara before 1.3.6 does not properly restrict the data in responses to AJAX calls, which allows remote authenticated users to obtain sensitive information via a request associated with (1) blocktype/myfriends/myfriends.json.php, (2) json/usersearch.php, (3) group/membersearchresults.json.php, or (4) json/friendsearch.php, as demonstrated by information about friends and e-mail addresses.
CWE-264 - Permissions Privileges and Access Controls
CWE 264 (permissions, privileges, and access controls) is not a weakness in and of itself, rather it is a category of weaknesses related to the management of permissions, privileges, and other security features used to perform access control. If not addressed, the weaknesses in this category allow attackers to gain privileges for an unintended sphere of control, access sensitive information, and execute arbitrary commands.