Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabtive before 2.1 allow remote authenticated users to execute arbitrary code by uploading a file with a (1) .php3, (2) .php4, (3) .php5, or (4) .phtml extension.

SQL injection vulnerability in managetimetracker.php in Collabtive before 1.2 allows remote authenticated users to execute arbitrary SQL commands via the id parameter in a projectpdf action.

manageuser.php in Collabtive before 0.7.6 allows remote authenticated users, and possibly unauthenticated attackers, to bypass intended access restrictions and upload and execute arbitrary files by uploading an avatar file with an accepted Content-Type such as image/jpeg, then accessing it via a direct request to the file in files/standard/avatar.