DRUPAL-CONTRIB-2020-015 This module enables you to build forms and surveys in Drupal.
Authenticated users with webform editing permissions can inject JavaScript into labels, leading to XSS when blocks are viewed.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is DRUPAL-CONTRIB-2020-015?
DRUPAL-CONTRIB-2020-015 is a cross-site scripting vulnerability in drupal/webform, published on 6 May 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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").
Which versions are affected by DRUPAL-CONTRIB-2020-015?
Linux distribution packages (1)
drupal/webform Packagist:https://packages.drupal.org/8 | All versions | 5.11.0 |
How do I fix DRUPAL-CONTRIB-2020-015?
Apply the vendor's patch.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is DRUPAL-CONTRIB-2020-015 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2020-015 in the wild and no public exploit code.