WordPress Platinum SEO plugin Cross Site Scripting Vulnerability

Summary
This host is installed with WordPress Platinum SEO 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 1.3.8 or higher, For Updated refer to http://wordpress.org/plugins/platinum-seo-pack
Insight
Input passed via the 's' parameter to platinum_seo_pack.php script is not properly sanitized before being returned to the user.
Affected
WordPress Platinum SEO Plugin version 1.3.7 and prior.
Detection
Send a crafted HTTP GET request and check whether it is able to read the cookie or not.
References