WordPress · Simple Membership Mailchimp Integration · CVE-2026-8151
**Name of the Vulnerable Software and Affected Versions**
Simple Membership MailChimp Integration versions prior to 1.9.8
**Description**
The settings page of the plugin lacks Cross-Site Request Forgery (CSRF) checks, which is a type of attack that forces an authenticated user to execute unwanted actions. This allows an attacker to trick a logged-in administrator into modifying the configured third-party API key. Consequently, all subsequent member registration data, including name, email, and membership level, is transmitted to an account controlled by the attacker.
**Recommendations**
Update Simple Membership MailChimp Integration to version 1.9.8 or later.