flatCore Cross-Site Scripting Vulnerability (CNVD-2022-58394)

flatCore is a lightweight content management system (CMS) based on PHP and SQLite. flatCore version 2.0.8 suffers from a cross-site scripting vulnerability that stems from a lack of data validation filtering of user-supplied and output data in the Create New Page option of the index page. An attacker could exploit this vulnerability to execute JavaScript code on the client side.