Slickstream Engagement and Conversions WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Slickstream: Engagement and Conversions plugin for WordPress, affecting all versions through 1.4.4. The issue arises from inadequate input sanitization and output escaping on user-supplied attributes in the plugin's slick-grid shortcode. This vulnerability 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 use the slick-grid shortcode to inject scripts. The absence of proper input validation and output escaping on the shortcode's attributes enables the injection of malicious scripts, which will be executed when the page is accessed.

Remediation

Users are advised to update the Slickstream: Engagement and Conversions plugin to version 2.0.0 or later.