- Package
- drupal/webform
- Fixed in
- 6.2.12, 6.3.1
- Published
- Wed 23 Sep 2026, 17:17 LisbonUpdated Mon 26 Oct 2026, 02:27 Lisbon
In plain words
The module does not properly restrict access to raw webform source editing when the Webform UI module is not enabled. A user with permission to create or edit webforms could enter source configuration that is rendered unsafely.
Am I affected?
Find drupal/webform and its version in composer.lock. The advisory lists fixes in 6.2.12 and 6.3.1 but gives no affected version ranges. Check whether the Webform UI module is not enabled and whether users have permission to create or edit webforms.
What to do
Check which version you have, then update to a fixed release for your branch (6.2.12, 6.3.1):
composer show drupal/webform | grep versions
composer update drupal/webform
If your version constraint in composer.json keeps you below a fixed release, raise it first. Whether your configuration is affected, and the exact version ranges, are in the advisory itself.
If you cannot update yet
The advisory identifies the requirement for an attacker to have permission to create or edit webforms as a mitigating factor.
The advisory's description
The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data.
The module does not sufficiently restrict access to raw webform source editing when the Webform UI module is not enabled. This could allow a user with webform creation or editing permissions to enter source configuration that is rendered unsafely.
This vulnerability is mitigated by the fact that an attacker must have permission to create or edit webforms.
The advisory
- OSV.dev: DRUPAL-CONTRIB-2026-166
- The week's digest, with the other advisories from 21 Sep 2026
- All advisories for drupal/webform