sqlite: unauthorized information access

This seems to me more like a bug (in the sense that it doesn't work as documented) than any real security problem.

If you have access to the file after the delete, then you also have access to the file before the delete, meaning you already can read whatever it is there.

The only security problem would be if using an encrypted sqlite database you could gain access to unencrypted data after a delete, which doesn't seem to be the problem.