The WP01 plugin for WordPress is vulnerable to Arbitrary File Download in all versions up to, and including, 2.6.2 due to a missing capability check and insufficient restrictions on the make_archive() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to download and read the contents of arbitrary files on the server, which can contain sensitive information.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.