CVE-2026-96369: Drupal Webform access bypass via JSON:API caching

CVE-2026-96369 · Severity: info · Published 2026-10-22

The Webform module for Drupal allows site administrators to create forms and manage user submissions. When JSON:API is enabled, the module may cache submission data without properly accounting for which user is viewing it, potentially allowing one authenticated user to see another user's form responses. An attacker would need an account with permission to view their own submissions, and the webform must be exposed through JSON:API.

Technologies: Drupal Webform, Packagist:Https://Packages.Drupal.Org/8 Drupal/Webform. Vendors: Drupal, Packagist:Https://Packages.Drupal.Org/8.

Quick answers

Is CVE-2026-96369 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96369 being exploited in the wild.
How severe is CVE-2026-96369?
Informational severity, published 22 October 2026.
Which products and versions are affected?
Drupal Webform <6.2.12, >=6.3.0 <6.3.1; Packagist:Https://Packages.Drupal.Org/8 Drupal/Webform ECOSYSTEM:introduced=0,fixed=6.2.12|ECOSYSTEM:introduced=6.3.0,fixed=6.3.1.
Is there a fix for CVE-2026-96369?
Yes. Packagist:Https://Packages.Drupal.Org/8 Drupal/Webform: upgrade to 6.2.12 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-96369 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-96369?
Check whether you run Drupal Webform or Packagist:Https://Packages.Drupal.Org/8 Drupal/Webform at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Packagist:Https://Packages.Drupal.Org/8 Drupal/Webform: upgrade to 6.2.12 or later

Technical details

The vulnerability is an improper cache variation flaw in the Webform module's JSON:API integration. When a webform is configured to allow authenticated users to view their own submissions, the collection endpoint may return cached responses that were generated for a different user, bypassing access controls. The attack requires JSON:API to be enabled, the webform to expose submissions through JSON:API, and the attacker to possess an authenticated account with view-own-submissions permission.

Affected products

  • Drupal Webform <6.2.12, >=6.3.0 <6.3.1

Identifiers

  • CVE-2026-96369
  • DRUPAL-CONTRIB-2026-165

Timeline

  • 2026-09-23: disclosed

References

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