Description
This module integrates the Campaign Monitor API into Drupal so that users can subscribe and unsubscribe for your Campaign Monitor. It manages lists through a block on your Drupal site.
The module doesn't sufficiently protect against cross-site request forgery (CSRF) on its admin routes.
This vulnerability is mitigated by the fact that an attacker must craft and embed into a Drupal site a link with exact ID of a Campaign Monitor list for user with *administer campaignmonitor* permission to click.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | drupal/campaignmonitor | < 3.0.3 | 3.0.3 | DRUPAL-CONTRIB-2026-326 |
Advisories 1
- WID-SEC-2026-4527 Drupal Erweiterungen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026