Apache Velocity Tools is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the default error page for VelocityView. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
Cross site scripting
Apache Velocity Tools 3.0
Upgrade to the latest version of Velocity Tools (3.1 or later).