The PostX WordPress plugin before 3.0.6 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
El plugin PostX de WordPress anterior a la versión 3.0.6 no sanea ni escapa un parámetro antes de devolverlo a la página, lo que provoca un Cross-Site Scripting (XSS) Reflejado que podría utilizarse contra usuarios con privilegios elevados, como los administradores.
The PostX - Gutenberg Post Grid Blocks plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘postx_type’ parameter in versions up to, and including, 3.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
