Magical Posts Display WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Magical Posts Display plugin for WordPress, affecting all versions through 1.2.54. The issue arises in the Magical Posts Accordion widget, where insufficient input sanitization and output escaping allow authenticated attackers with Author-level access or higher to inject arbitrary web scripts. These scripts are executed when a user accesses the affected 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.

Reproduction

To reproduce this vulnerability, an authenticated user with Author-level access or higher can inject scripts through the 'mpac_title_tag' parameter in the Magical Posts Accordion widget. The injected scripts will be executed when the page is accessed.

Remediation

Users are advised to update the Magical Posts Display plugin to version 1.2.55 or later.