Zero-Day Advisory

Fortinet Discovers dotCMS Server-Side Request Forgery Bypass Vulnerability


Fortinet's FortiGuard Labs had discovered a Server-Side Request Forgery (SSRF) vulnerability in dotCMS Core.

dotCMS is an open source content management system (CMS) written in Java for managing content and content driven sites and applications.

The vulnerability is a bypass of the patch for the previously reported SSRF vulnerability but via HTTP redirection. Upon successful exploitation, it allows attackers to retrieve arbitrary server side information.


Users should apply the solution provided by dotCMS.

Additional Information

The vulnerability affected dotCMS Core version 22.06 and below.


Fortinet reported the vulnerability to dotCMS on 10th June, 2022.

dotCMS confirmed the vulnerability on 30th July, 2022.


This vulnerability was discovered by Nguyen Thanh Nguyen 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.