Project: 
Webform
Project machine name: 
webform
Date: 
2020-May-06
Security risk: 
Moderately critical 14 ∕ 25 AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:All
Vulnerability: 
Cross site scripting
Affected versions: 
<5.11.0
Description: 

This module enables you to build forms and surveys in Drupal.

The module doesn't sufficiently sanitize Webform labels nor visibility conditions under the scenario of placing a block. When a webform block is placed and visible on a website any JavaScript code contained within the webform's label was executed.

This vulnerability is mitigated by the fact that an attacker must have a role with the permission "Edit own webform" (or "Edit any webform").

Solution: 

Install the latest version:

Also see the Webform project page.

Reported By: 
Fixed By: 
Coordinated By: