Essential Addons for Elementor Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Essential Addons for Elementor - Popular Elementor Templates & Widgets plugin for WordPress, affecting all versions through 6.5.3. The vulnerability arises from inadequate input sanitization and output escaping in the Event Calendar widget's custom attributes and the Image Masking module's element ID rendering. This flaw allows authenticated attackers with Contributor-level access or higher to inject arbitrary scripts into pages, which are executed when users access the affected pages.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Reproduction

To reproduce this vulnerability, an authenticated user with Contributor-level access or higher can inject scripts through the Event Calendar widget's custom attributes or the Image Masking module by exploiting the lack of proper input sanitization and output escaping. Once injected, the scripts will execute when the page is viewed by users.

Remediation

Users are advised to update the Essential Addons for Elementor - Popular Elementor Templates & Widgets plugin to version 6.5.4 or later.