Vulnerability in Drupal
CVE-2026-55804
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.*.
Vulnerability class: Mass Assignment
EPSS: 0.004 (27.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Drupal
- Drupal Core — versions 0.0.0, 10.6.0, 11.2.0
Weakness classification (CWE)
References
- mlhess@drupal.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-55804?
- CVE-2026-55804 is a medium-severity vulnerability in Drupal, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 5.9/10. Published 2026-07-10.
- How severe is CVE-2026-55804?
- Medium severity. CVSS v3 base score is 5.9 out of 10.