Thanks for the tip, I will upgrade url snooper to use the newly release 4.02.
I'll post the text about the security issue -- it seems its pretty minor, it related to the ability of *local* users on your pc which might not have administrative accounts being able to perform administrative actions:
In a security advisory, security service provider iDefense has warned of a vulnerability in a device driver within the open source WinPcap library that local users could exploit to escalate their privileges.
Regardless, I have something else to upgrade with url snooper anyway so expect a new version in the next couple of days.