by AverageJoe » Fri Aug 07, 2015 5:32 pm
The ISVV team (And developers I think as well to a lesser extent) regularly checks the bugs in the bugtracker.
Like others have mentioned, any bugs reported to the bugtracker that are found to be exploits that could potentially be abused by other players are marked as hidden from public view so others do not see and try to exploit them.
If you think the bug you found is really, REALLY bad that you don't want anyone else seeing it in the timeframe between you writing it up and it getting marked hidden, just send a PM to one of the staff.