WordPress Tag, Category, and Taxonomy Manager Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the WordPress Tag, Category, and Taxonomy Manager plugin, affecting versions prior to 3.30.0. The issue arises because the plugin fails to properly sanitize and escape certain widget settings. This flaw enables high-privilege users, such as administrators, to execute stored cross-site scripting attacks, even in environments where the unfiltered_html capability is restricted, such as multisite setups.

Impact

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

Remediation

Users are advised to update the WordPress Tag, Category, and Taxonomy Manager plugin to version 3.30.0 or later.