No, there aren't any known security issues with glinks 3.2 (which by, is the current release).

Do you have anything else installed on your server?

I would do as Andy suggested and make sure you change your passwords, but if possible, the best would be to make a backup of the current state of your server (for analysis) and to restore from a previous backup before getting hacked. Then would come the process of figuring out how they got in and to patch the problem.

Adrian