Cross-site scripting (XSS) vulnerability in jsp/cal/cal2.jsp in the calendar application in the examples web application in Apache Tomcat on Red Hat Enterprise Linux 5, Desktop Workstation 5, and Linux Desktop 5 allows remote attackers to inject arbitrary web script or HTML via the time parameter, related to "invalid HTML." NOTE: this is due to a missing fix for CVE-2009-0781.
https://bugzilla.redhat.com/show_bug.cgi?id=616717
http://www.vupen.com/english/advisories/2010/1986