WordPress CommentLuv Plugin '_ajax_nonce' Cross-Site Scripting Vulnerability

Summary
This host is installed with Wordpress CommentLuv Plugin and is prone to cross site scripting vulnerability.
Impact
Successful exploitation will allow attacker to execute arbitrary HTML and script code in a user's browser session in the context of an affected site Impact Level: Application
Solution
Upgrade to version 2.92.4 or later, For updates refer to http://wordpress.org/extend/plugins/commentluv
Insight
Flaw is due to improper validation of the '_ajax_nonce' parameter upon submission to the '/wp-admin/admin-ajax.php' script.
Affected
WordPress CommentLuv Plugin version before 2.92.4
Detection
Send a crafted data via HTTP GET request and check whether it is able to read cookie or not.
References