Authentication Bypass by Spoofing vulnerability in WP Happy Coders Comments Like Dislike allows Functionality Bypass.This issue affects Comments Like Dislike: from n/a through 1.2.2.

The Comments Like Dislike plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the restore_settings function called via an AJAX action in versions up to, and including, 1.1.9. This makes it possible for authenticated attackers with minimal permissions, such as a subscriber, to reset the plugin's settings. NOTE: After attempting to contact the developer with no response, and reporting this to the WordPress plugin's team 30 days ago we are disclosing this issue as it still is not updated.

The Comments Like Dislike WordPress plugin before 1.1.4 allows users to like/dislike posted comments, however does not prevent them from replaying the AJAX request to add a like. This allows any user (even unauthenticated) to add unlimited like/dislike to any comment. The plugin appears to have some Restriction modes, such as Cookie Restriction, IP Restrictions, Logged In User Restriction, however, they do not prevent such attack as they only check client side