MailChimp – Moderately Critical – Cross Site Scripting (XSS) – SA-CONTRIB-2015-101


The MailChimp module allows you to create and manage mailing lists via MailChimp’s API.

The MailChimp Signup submodule does not properly sanitize some user input, allowing a malicious user to embed scripts within a page, resulting in a Cross-site Scripting (XSS) vulnerability.

This vulnerability is mitigated by the fact that an attacker must have a role with the “administer mailchimp” permission and the “MailChimp Signup” submodule must be enabled.

CVE identifier(s) issued

  • A CVE identifier will be requested, and added upon issuance, in accordance
    with Drupal Security Team processes.

Versions affected

  • MailChimp 7.x-3.x versions prior to 7.x-3.3. (Mailchimp 7.x-2.x versions are not affected)

Drupal core is not affected. If you do not use the contributed MailChimp module,
there is nothing you need to do.


Install the latest version:

Also see the MailChimp project page.

Reported by

Fixed by

Coordinated by

Contact and More Information

The Drupal security team can be reached at security at or via the contact form at

Learn more about the Drupal Security team and their policies, writing secure code for Drupal, and securing your site.

Follow the Drupal Security Team on Twitter at

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