Categories Images WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Categories Images plugin for WordPress, affecting versions through 3.3.1. The issue arises in the 'z_taxonomy_image' shortcode, where attacker-controlled class input is passed into an image builder that concatenates HTML attributes without proper escaping. This flaw allows authenticated attackers with Contributor-level access and above to inject arbitrary scripts that execute when users interact with the affected frontend page.

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.

Remediation

Users are advised to update the Categories Images plugin to version 3.3.2 or later.