In TitanHQ SpamTitan through 7.03, a vulnerability exists in the spam rule update function. Updates are downloaded over HTTP, including scripts which are subsequently executed with root permissions. An attacker with a privileged network position is trivially able to inject arbitrary commands.
TitanHQ SpamTitan before 7.01 has Improper input validation. This allows internal attackers to bypass the anti-spam filter to send malicious emails to an entire organization by modifying the URL requests sent to the application.