The Ebook Store plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 5.8001. This is due to the plugin utilizing fpdi-protection and not preventing direct access to test files that have display_errors set to true. This makes it possible for unauthenticated attackers to retrieve the full path of the web application, which can be used to aid other attacks. The information displayed is not useful on its own, and requires another vulnerability to be present for damage to an affected website. The plugin vendor removed the test files, however, did not increment the version meaning this is inadequately patched in the same version that is affected.