Date: 
Wednesday, Aug 7th, 2019
Advisory ID: 
BACKDROP-SA-CORE-2019-010
Security risk: 
Moderately Critical
Vulnerability: 
Cross Site Scripting
Versions affected: 
  • Backdrop Core 1.13.x versions prior to 1.13.3
  • Backdrop Core 1.12.x versions prior to 1.12.8
Description: 

Some menu links within the administration bar may be crafted to execute JavaScript when the administrator is logged in and uses the search functionality.

This issue is mitigated by the attacker needing permissions to create administrative menu links, such as by creating a content type or layout. Such permissions are usually restricted to trusted or administrative users.

Solution: 

Upgrade your site to the most recent version of Backdrop core. Download available on the Backdrop CMS 1.13.3 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.

  1. Log in to backdropcms.org
  2. Edit your profile
  3. Switch to the "Subscriptions" tab
  4. Check the box labeled "Security updates"
  5. Save the form