The Bitly's WordPress Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on several AJAX actions in all versions up to, and including, 2.7.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update and retrieve plugin settings.
https://plugins.trac.wordpress.org/browser/wp-bitly/trunk/includes/class-wp-bitly-auth.php#L115