Here is something funny, so terribly unlikely that I'm not gonna worry about it, but there's always a way, isn't there.

Suppose Fred knows all about edbrowse, and millions of people are using edbrowse (instead of 15),
and he knows a lot of us use the plugins in the wiki to access zip files.
He writes a web page with javascript that does an xhr request to
zipxd://foo.zip@:@top
If anything is found, the javascript sends it back to the server for analysis.
Or maybe the script traverses the entire tree in the zip archive and sends all the files to the server.
Now I say it's unlikely because the web page would have to know the name of your zip file, i.e. the path to your zip file, and at least one directory.
In my example it has to know there is foo.zip in your current directory and it has a directory inside it called top.
There aren't any standard zip files in standard places on unix machines, so I guess we're all right.
I just looked under /bin /lib /usr /etc and found none.

Karl Dahlke