Date: 
Friday, Mar 22nd, 2019
Security risk: 
Moderately Critical
Advisory ID: 
BACKDROP-SA-CONTRIB-2019-005
Vulnerability: 
Cross Site Scripting
Versions affected: 
  • Back To Top 1.x-1.x versions prior to 1.x-1.1.2
  • Back To Top 1.x-2.x versions prior to 1.x-2.0.2

This module enables you to add a button that hovers in the bottom of your screen and allows users to smoothly scroll up the page using jQuery.

The module doesn't sufficiently sanitize the code that gets printed on pages leading to a Cross Site Scripting (XSS) issue.

This vulnerability is mitigated by the fact that an attacker must have a role with the permission "access backtotop settings".

Solution: 

Upgrade your site to the most recent version of Back To Top. Download available on the Back To Top 1.x releases page. See the update instructions, if needed.

Reported By: 
Coordinated By: 

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