Full Path Disclosure Vulnerability Affects No Update Nag Plugin for WordPress

Summary

The No Update Nag plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 1.4.12. This is due to the plugin allowing direct access to the bootstrap.php file which has display_errors on. 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.