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.