source: http://www.securityfocus.com/bid/9853/info

It has been reported that cPanel may be prone to a cross-site scripting vulnerability that may allow a remote attacker to execute HTML or script code in a user's browser. The issue presents itself due to insufficient sanitization of user-supplied data via the 'dir' parameter of 'dohtaccess.html' page. The victim may require to be authenticated with valid credentials to be exposed to exploitation.

Due to the possibility of attacker-specified HTML and script code being rendered in a victim's browser, it is possible to steal cookie-based authentication credentials from that user. Other attacks are possible as well.

http://www.example.com:2082/frontend/x/htaccess/dohtaccess.html?dir=><script>alert(0x29A Crew)</script>