https://sourceforge.net/projects/webcalendar/?source=directory
There is no sanitation on the input of the location variable. This
allows malicious scripts to be added. This is a stored XSS
01/11/12 - Vendor Notified
01/19/12 - No response, disclosure
Location=[XSS]
The script can be added right in the page, there is no filtering of
input.