Zero-Day Advisory

Fortinet Discovers WordPress Popup Anything Plugin Cross-Site Scripting Vulnerability

Summary

Fortinet's FortiGuard Labs has discovered a cross-site scripting (XSS) vulnerability in WordPress Popup Anything Plugin.


Popup Anything is a modal popup plugin for WordPress websites that allows you to add highly customizable popup windows. It has over 50,000+ active installations.


A stored XSS vulnerability exists in Popup Anything Forms for WordPress 1.9.2.1 and below. A low privileged user (Contributor+) can inject arbitrary javascript code in popup draft form.


Solutions

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

WordPress.Plugin.Popup.Anything.XSS
Released Sep 17, 2021

Upgrade to Popup Anything version - 2.0.4 or later.

Timeline

Fortinet reported the vulnerability to WP OnlineSupport Team on September 1, 2021.

WP OnlineSupport Team confirmed the vulnerability on September 8, 2021.

WP OnlineSupport Team patched the vulnerability on October 14, 2021

References

Acknowledgement

This vulnerability was discovered by Vishnupriya Ilango 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.