Custom Post Type UI < 1.18.2 - Admin+ Stored XSS via 'label' Import Parameter

Description

The plugin is vulnerable to Stored Cross-Site Scripting via the 'label' parameter during custom post type import due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses the Tools → Get Code page.