Jetpack CRM <= 5.5.0 - Authenticated (Administrator+) Stored Cross-Site Scripting

The Jetpack CRM plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 5.5.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrator-level access, 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.