CVE-2026-55803

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.

• Published Jul 10, 2026
• CVSS 5.9 medium
• 0.4% chance of exploitation in the next 30 days (EPSS)

CVE-2026-55803 at the National Vulnerability Database