Description
Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Drupal.org | Drupal Core | 8 prior to 8.3.4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | drupal/core | >= 8.0, < 8.3.4 | 8.3.4 | GHSA-9c24-g32g-35rj |
| Packagist | drupal/drupal | >= 8.0, < 8.3.4 | 8.3.4 | GHSA-9c24-g32g-35rj |