Plugin Name : Facebook Like Button Effected Version : 2.32 (and most probably lower version's if any) Vulnerability : A3-Cross-Site Scripting (XSS) Identified by : Madhu Akula Technical Details Minimum Level of Access Required : Administrator PoC - (Proof of Concept) : The following field put the payload as below http://localhost/wp-admin/admin.php?page=facebook-button-plugin.php fcbkbttn_link = ?><script>alert(1)</script> Vulnerable Parameter : fcbkbttn_link Type of XSS : Reflected Fixed in : 2.33 http://wordpress.org/plugins/facebook-button-plugin/changelog/ Disclosure Timeline Vendor Contacted : 2014-08-04 Plugin Status : Updated on 2014-08-07 Public Disclosure : October 3, 2015 CVE Number : Not assigned yet Plugin Description : Facebook Like Button Plugin allows you to add a Follow button the easiest way. If your life is tightly connected with your Facebook account, our plugin is the best solution for you. It contains minimum settings. Just a few clicks and voila - the Facebook button is on your site.