Weird mySQL permissions

Hello,

We recently recieved some information from a user saying that they could see all of the mySQL tables on the server when going into phpMyAdmin in the dropdown menu, however they cannot do anything with the database, and cannot see any of the data in it.

After looking around it seems that cPanel, for some very odd reason, has granted GLOBAL privledges for most, if not all mySQL users to create temporary tables and lock tables. I can't see the reasoning behind this as you can obviously set these permissions in individual tables, and it is not something that I'd like to explain to our 1000+ hosting customers when they all start asking why they can see everyone elses database.

Does anyone know what caused this, if it's going to be resolved in a future version, and if there's a nice and quick fix?

Thanks for any help you can offer in advance, I greatly appreciate it.