CVE-2024-0561 – Ultimate Posts Widget < 2.3.1 - Admin+ Stored XSS

https://notcve.org/view.php?id=CVE-2024-0561

The Ultimate Posts Widget WordPress plugin before 2.3.1 does not validate and escape some of its Widget options before outputting them back in attributes, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup) El complemento de WordPress Ultimate Posts Widget anterior a 2.3.1 no valida ni escapa algunas de sus opciones de widget antes de devolverlas en atributos, lo que podría permitir a usuarios con altos privilegios, como el administrador, realizar ataques de Cross-Site Scripting Almacenado incluso cuando la capacidad unfiltered_html no está permitida (por ejemplo, en una configuración multisitio) The Ultimate Posts Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled. • https://wpscan.com/vulnerability/99b6aa8b-deb9-48f8-8896-f3c8118a4f70 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •