Date: 
Wednesday, Sep 30th, 2020
Advisory ID: 
BACKDROP-SA-CORE-2020-006
Security risk: 
Moderately Critical
Vulnerability: 
Cross Site Scripting
CVE ID: 
CVE-2020-13669
Versions affected: 
  • Backdrop Core 1.17.x versions prior to 1.17.1
  • Backdrop Core 1.16.x versions prior to 1.16.4

Backdrop versions 1.15 and prior do not receive security coverage.

Description: 

Backdrop core's built-in CKEditor image caption functionality is vulnerable to XSS.

This SA is equivalent to Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2020-010

Solution: 

Upgrade your site to the most recent version of Backdrop core. Download available on the Backdrop CMS 1.17.1 release page. See the update instructions, if needed.

Reported By: 
Fixed 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