Wednesday, Dec 18th, 2019
Advisory ID: 
Security risk: 
Cross Site Scripting
Versions affected: 
  • Backdrop Core 1.14.x versions prior to 1.14.2
  • Backdrop Core 1.13.x versions prior to 1.13.5



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".


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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