The WP-JS plugin for WordPress contains a script called wp-js.php with the function wp_js_admin, that accepts unvalidated user input and echoes it back to the user. This can be used for reflected Cross-Site Scripting in versions up to, and including, 2.0.6.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.