Little known fact: OS X has something quite similar to UNC paths, which can probably be used in the same way as an exploitation vector for this bug (and others). Specifically, there is an autofs mounted on /net which will try to mount an NFS share from any IP address if triggered by any process simply accessing a path starting with "/net/(host)/(sharename)".

Incidentally, I don't think this is accessible from an app sandbox, but I expect JetBrains' IDEs aren't sandboxed.