CVE-2012-5551: Improper Neutralization of Input During Web Page Generation

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."...