Wednesday, Jun 17th, 2020
Security risk: 
Advisory ID: 
Cross Site Request Forgery
Versions affected: 
  • Backdrop Core 1.16.x versions prior to 1.16.2
  • Backdrop Core 1.15.x versions prior to 1.15.4

Backdrop versions 1.14 and prior do not receive security coverage.


The Backdrop core Form API does not properly handle form input from cross-site requests, which can lead to other vulnerabilities.



Upgrade your site to the most recent version of Backdrop core. Download available on the Backdrop CMS 1.16.2 release page. See the update instructions, if needed.

Reported By: 
Fixed By: 
Coordinated By: 

Security email list

Backdrop maintains a security mailing list. Whenever a security release comes out, an email will be sent to everyone subscribed to that list, announcing the new release. Please follow the steps below to join the Security email list.

  • Log in to
  • Edit your profile
  • Scroll down to the "Email notifications" section
  • Check the box labeled "Receive security announcements for core and contrib projects"