The Twitter posts to Blog plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'dg_tw_options' function in all versions up to, and including, 1.11.25. This makes it possible for unauthenticated attackers to update plugin settings including Twitter API credentials, post author, post status, and the capability required to access the plugin's admin menu.
https://plugins.trac.wordpress.org/browser/twitter-posts-to-blog/trunk/functions.php#L426