WordPress Social Connect plugin Cross Site Scripting Vulnerability

Summary
This host is installed with Wordpress Social Connect 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 latest version of WordPress Social Connect plugin. For updates refer to http://wordpress.org/plugins/social-connect
Insight
Input passed via the 'testing' parameter to /social-connect/diagnostics/test.php script is not properly sanitised before being returned to the user.
Affected
WordPress Social Connect plugin version 1.0.4 and earlier.
Detection
Send a crafted data via HTTP GET request and check whether it is able to read cookie or not.
References