WebCalendar Multiple Cross Site Scripting Vulnerabilities

Summary
This host is running WebCalendar and is prone to multiple cross site scripting vulnerabilities.
Impact
Successful exploitation could allow remote attackers to execute arbitrary HTML and script code in a user's browser session in context of an affected site. Impact Level: Application
Solution
Upgrade to WebCalendar versions 1.2.4 or later, For updates refer to http://www.k5n.us/webcalendar.php
Insight
The flaws are caused by improper validation of user-supplied input in various scripts, which allows attackers to execute arbitrary HTML and script code on the web server.
Affected
WebCalendar versions 1.2.3 and prior.
References