CVE-2026-93896

The WPFront Notification Bar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 3.5.1. This is due to the debug-log output path (write_debug_logs) reflecting the raw value of $_SERVER['REQUEST_URI'] through vprintf() directly inside a <script> block emitted on wp_footer, without any sanitization or escaping (see the 'Current URL is "%s"' log entry produced by the URL-text display filter in the filter() method). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.

• https://plugins.trac.wordpress.org/browser/wpfront-notification-bar/tags/3.5.1/classes/class-wpfront-notification-bar-controller.php#L327
• https://plugins.trac.wordpress.org/browser/wpfront-notification-bar/tags/3.5.1/classes/class-wpfront-notification-bar-controller.php#L491
• https://plugins.trac.wordpress.org/browser/wpfront-notification-bar/tags/3.5.1/classes/class-wpfront-notification-bar-controller.php#L843
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3722432%40wpfront-notification-bar&new=3722432%40wpfront-notification-bar
• https://www.wordfence.com/threat-intel/vulnerabilities/id/39563589-d585-4fba-9685-7e4b4eaef30e?source=cve