FCKeditor 'print_textinputs_var()' Multiple Cross Site Scripting Vulnerabilities

Summary
This host is installed with FCKeditor and is prone to multiple cross site scripting vulnerabilities.
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 FCKeditor version 2.6.11 or later, For updates refer to http://ckeditor.com
Insight
Input passed via the keys and values of POST parameters to editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php is not properly sanitised in the 'print_textinputs_var()' function before being returned to the user.
Affected
FCKeditor version prior to 2.6.11
Detection
Send a crafted exploit string via HTTP GET request and check whether it is possible to read cookie or not.
References