Vulnerability ID: HTB23038
Reference: https://www.htbridge.ch/advisory/xss_in_redirection_wordpress_plugin.html
Product: Redirection wordpress plugin
Vendor: John Godley ( http://urbangiraffe.com ) 
Vulnerable Version: 2.2.8 and probably prior
Tested Version: 2.2.8
Vendor Notification: 10 August 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
Risk level: Medium 
Credit: High-Tech Bridge SA Security Research Lab ( https://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
High-Tech Bridge SA Security Research Lab has discovered vulnerability in Redirection wordpress plugin, which can be exploited to perform cross-site scripting attacks.

Input passed via the "id" GET parameter to /wp-admin/tools.php (when "page" is set to "redirection.php") is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a administrator's browser session in context of affected website.

The following PoC code is available:

http://[host]/wp-admin/tools.php?page=redirection.php&id=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
Solution: Upgrade to the most recent version