source: https://www.securityfocus.com/bid/17643/info
 
PHPLDAPAdmin is prone to multiple input-validation vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input.
 
An attacker can exploit these issues to execute arbitrary HTML and script code in the browser of a victim user in the context of the affected website. This may allow the attacker to steal cookie-based authentication credentials, to control how the site is rendered to the user, and to launch other attacks.

http://www.example.com/copy_form.php?server_id=0&dn=%22%3Cscript%3Ealert(&#039;r0t&#039;)%3C/script%3E