Under certain circumstances, the Drupal core form API evaluates form element access incorrectly. This may lead to a user being able to alter data they should not have access to. No forms provided by Drupal core are known to be vulnerable. However, forms added through contributed or custom modules or themes may be affected.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Drupal | Drupal | 8.0.0 (including) | 9.3.19 (excluding) |
| Drupal | Drupal | 9.4.0 (including) | 9.4.3 (excluding) |
| Drupal7 | Ubuntu | trusty | * |
| Drupal7 | Ubuntu | trusty/esm | * |
| Drupal7 | Ubuntu | xenial | * |