Date: 
Wednesday, Feb 19th, 2025
Advisory ID: 
BACKDROP-SA-CONTRIB-2025-004
Security risk: 
Moderately Critical
Vulnerability: 
Cross Site Scripting
Versions affected: 
  • Bootstrap 5 Lite module, 1.x versions prior to 1.x-1.0.3.

 

Description: 

The Bootstrap 5 Lite Backdrop CMS theme doesn't sufficiently sanitize certain class names.

A CVE has been requested, and this page will be updated as soon as an official number has been issued.

Solution: 

Upgrade your site to use the most recent version of Bootstrap 5 Lite. Download available on the Bootstrap 5 Lite 1.0.3 release page.

Reported By: 
  • Kevin van Hulst
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