Vulnerability ID: HTB22973
Reference: http://www.htbridge.ch/advisory/xss_in_ajax_calendar.html
Product: AJAX Calendar
Vendor: OpenCrypt ( http://www.opencrypt.com ) 
Vulnerable Version: 1.0
Vendor Notification: 21 April 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
Risk level: Medium 
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.
The vulnerability exists due to failure in the "/example.php" script to properly sanitize user-supplied input.
Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.

[host]
http://[host]/example.php?y=1%27%22%3E%3Cscript%3Ealert%28123%29;%3C/script%3E
[/host]
Solution: Upgrade to the most recent version