Directory traversal vulnerability in GForge 3.3 and earlier allows remote attackers to list arbitrary directories via a .. (dot dot) in the (1) dir parameter to controller.php or (2) dir_name parameter to controlleroo.php.

viewFile.php in the scm component of Gforge before 4.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the file_name parameter.

Multiple cross-site scripting (XSS) vulnerabilities in GForge 4.5 allow remote attackers to inject arbitrary web script or HTML via the (1) forum_id or (2) group_id parameter to forum.php, (3) project_task_id parameter to task.php, (4) id parameter to detail.php, (5) the text field on the search page, (6) group_id parameter to qrs.php, (7) form, (8) rows, (9) cols or (10) wrap parameter to notepad.php, or the login field on the login form.

The (1) lost password and (2) account pending features in GForge 4.5 do not properly set a limit on the number of e-mails sent to an e-mail address, which allows remote attackers to send a large number of messages to arbitrary e-mail addresses (aka mail bomb).

GForge Advanced Server 6.4.4 allows XSS via the commonsearch.php words parameter, as demonstrated by a snippet/search/?words= substring.