XSS Vulnerabilities in osTicket


Advisory by Netsparker (now Invicti)
Name: XSS Vulnerabilities in osTicket
Software: osTicket v1.9.1 and possibly below.
Vendor Homepage: http://osticket.com/
Vulnerability Type: Cross-site Scripting
Severity: Critical
Researcher: Omar Kurt
Advisory Reference: NS-14-021


osTicket is a widely-used open source support ticket system. It seamlessly integrates inquiries created via email and web-based forms into a simple easy to use multi-user web interface.


osTicket is affected by XSS vulnerabilities in version v1.9.1.
osTicket PoC urls are as follows:

  • Cross-site Scripting
    http://example.com/open.php (POST, fields: Phone Number)

    http://example.com/account.php – (POST, fields: Phone Number,passwd1,passwd2)

Learn more about Cross-site Scripting vulnerabilities:



Advisory Timeline

11/06/2014 – First Contact
12/06/2014 – Second Contact
17/06/2014 – Vulnerability fixed
23/06/2014 – Advisory released


It has been discovered on testing of Invicti Web Application Security Scanner.

About Invicti

Invicti® can find and report security issues such as SQL Injection and Cross-site Scripting (XSS) in all web applications regardless of the platform and the technology they are built on. Invicti’s unique detection and exploitation techniques allows it to be dead accurate in reporting hence it’s the first and the only False Positive Free web application security scanner.