CVE-2026-1781 MC4WP: Mailchimp for WordPress <= 4.11.1 - Missing Authorization to Unauthenticated Arbitrary Subscription Deletion

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 4.11.1. This is due to the plugin trusting the mc4wpaction POST parameter without validation, allowing unauthenticated attackers to force the form to process...

PT-2026-24546

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 4.11.1. This is due to the plugin trusting the mc4wp action POST parameter without validation, allowing unauthenticated attackers to force the form to process...