Import Users to MailChimp <= 1.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting
EntreBase Advisory: The Import Users to MailChimp plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Read more about this vulnerability: https://www.wordfence.com/threat-intel/vulnerabilities/id/16d41531-5250-421e-93d6-29176e1f252d?source=api-prod