Zero-Day Advisory

Fortinet Discovers OpenCart Cross-Site Scripting Vulnerability


Fortinet's FortiGuard Labs has discovered a Cross-Site Scripting vulnerability in OpenCart.

OpenCart is an open source PHP-based online e-commerce solution. OpenCart powers over 471669 eCommerce Entrepreneurs all over the world.

A Cross-Site Scripting vulnerability has been discovered in OpenCart. The vulnerability is caused due to insufficiently sanitizing search values. It allows remote attackers to launch Cross-Site Scripting attack against OpenCart users.


FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:

Released Sep 14, 2017

Users should apply the solution provided by OpenCart.


Fortinet reported the vulnerability to OpenCart on September 1, 2017.

OpenCart confirmed the vulnerability on September 5, 2017.


This vulnerability was discovered by Zhouyuan Yang of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.