What the vulnerability does
01Description
The NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via the 'nx-preview' POST parameter in all versions up to, and including, 3.2.0. This is due to insufficient input sanitization and output escaping when processing preview data. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute when a user visits a malicious page that auto-submits a form to the vulnerable site.
Explanation of Vulnerability in Simple Terms
02Summary
NotificationX versions up to 3.2.0 contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts into the site. The vulnerability affects the plugin's notification and popup functionality, potentially compromising visitor data or redirecting users to malicious sites. No user interaction is required for the attack to succeed.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in visitors' browsers and steals data or redirects them to phishing sites.
Potential impact on your site
04Site Impact
Visitors to your site could be compromised without their knowledge; your site's reputation and user trust are at risk.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
January 20, 2026
CVE published
April 8, 2026
Record updated
