Project:
Project machine name:
webformDate:
2026-September-23
Vulnerability:
Denial of service
Affected versions:
<6.2.12 || >=6.3.0 <6.3.1
CVE IDs:
CVE-2026-96365
Description:
The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Site builders may also configure handlers for processing submissions. Forms may be displayed in blocks.
Webform does not sufficiently validate an optional token query value before using it. Under specific configurations where a Webform is rendered for anonymous visitors, a malicious request can cause the request to consume significant resources leading to a Denial of Service.
Solution:
Install the latest version:
- If you use the 6.2.x branch of Webform upgrade to Webform 6.2.12.
- If you use the 6.3.x branch of Webform, upgrade to Webform 6.3.1.
Reported By:
Coordinated By:
- Swan Kalata (akalata) of the Drupal Security Team
- Bram Driesen (bramdriesen) of the Drupal Security Team
- cilefen (cilefen) of the Drupal Security Team
- Damien McKenna (damienmckenna) of the Drupal Security Team
- Greg Knaddison (greggles) of the Drupal Security Team
- Ivo Van Geertruyen (mr.baileys) of the Drupal Security Team
- Jess (xjm) of the Drupal Security Team
