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4.3
Mailchimp List Subscribe Form: Admins tricked into changing Mailchimp lists
CVE-2025-12172
Summary
The Mailchimp List Subscribe Form plugin for WordPress is vulnerable to a type of attack that tricks site administrators into changing Mailchimp lists without their knowledge. This can happen if an attacker tricks the administrator into clicking on a malicious link. Update the plugin to the latest version to fix this issue.
Original title
The Mailchimp List Subscribe Form plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.0. This is due to missing or incorrect nonce validation ...
Original description
The Mailchimp List Subscribe Form plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.0. This is due to missing or incorrect nonce validation on the mailchimp_sf_change_list_if_necessary() function. This makes it possible for unauthenticated attackers to change Mailchimp lists via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
nvd CVSS3.1
4.3
Vulnerability type
CWE-352
Cross-Site Request Forgery (CSRF)
Published: 19 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026