source: https://www.securityfocus.com/bid/16260/info

Apache Geronimo is prone to multiple input-validation vulnerabilities because the application fails to properly sanitize user-supplied input.

A successful exploit could allow an attacker to compromise the application, access or modify data, or steal cookie-based authentication credentials. The attacker could also exploit this issue to control how the site is rendered to the user; other attacks are also possible. 

http://www.example.com/jsp-examples/cal/cal2.jsp?time="/><script>alert('Gotcha')</script>