CVE-2012-5551: Thinkshout Mailchimp

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in the MailChimp module 7.x-2.x before 7.x-2.7 for Drupal allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) a predictable "webhook URL key" and (2) improper sanitization of "Webhook variables from POST requests."

Affected products

• Thinkshout Mailchimp: version 7.x-2.0 only; version 7.x-2.1 only; version 7.x-2.2 only; version 7.x-2.3 only; version 7.x-2.4 only; version 7.x-2.5 only; …

Published 2012-12-03. Last modified 2026-06-16.