source: http://www.securityfocus.com/bid/46085/info

Moodle is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

Exploiting this vulnerability may allow an attacker to perform cross-site scripting attacks on unsuspecting users in the context of the affected website. As a result, the attacker may be able to steal cookie-based authentication credentials and to launch other attacks.

Versions prior to Moodle 2.0.1 are vulnerable. 

http://www.example.com/moodle/lib/spikephpcoverage/src/phpcoverage.remote.top.inc.php?PHPCOVERAGE_HOME=[xss]