The LABjs module integrates LABjs with Drupal for web performance optimization.

The module ships with a modified version of the core Overlay JavaScript file, which is vulnerable to an open redirect attack (see SA-CORE-2015-002).

Only sites with the Overlay module enabled are vulnerable.

CVE identifier(s) issued

  • CVE-2015-3233

Versions affected

  • LABjs 7.x-1.x versions prior to 7.x-1.7.

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


Install the latest version:

  • If you use the LABjs module for Drupal 7.x, upgrade to LABjs 7.x-1.7.

Also see the LABjs 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