Date: 
Wednesday, Dec 18th, 2019
Advisory ID: 
BACKDROP-SA-CORE-2019-014
Security risk: 
Critical
Vulnerability: 
Cross Site Scripting
CVE ID: 
CVE-2019-19900
Versions affected: 
  • Backdrop Core 1.14.x versions prior to 1.14.2
  • Backdrop Core 1.13.x versions prior to 1.13.5

 

Description: 

Backdrop CMS doesn't sufficiently filter output when displaying content type names in the content creation interface. An attacker could potentially craft a specialized content type name, then have an editor execute scripting when creating content.

This vulnerability is mitigated by the fact that an attacker must have a role with the permission "Administer content types".

Solution: 

Upgrade your site to the most recent version of Backdrop core. Download available on the Backdrop CMS 1.14.2 release page. See the update instructions, if needed.

Reported By: 
  • Bot Kotatu
Fixed By: 
Coordinated By: 

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