MDTF WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the MDTF – Meta Data and Taxonomies Filter plugin for WordPress, affecting all versions through 1.3.3.6. The vulnerability arises from inadequate input sanitization and output escaping on user-supplied attributes within the 'mdf_results_by_ajax' shortcode. This flaw allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages, which are executed when users access the injected 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 'mdf_results_by_ajax' shortcode. The user can inject scripts through the shortcode's attributes, which will be executed when the page is accessed.

Remediation

Users are advised to update the MDTF – Meta Data and Taxonomies Filter plugin to version 1.3.3.7 or a newer patched version.