CVE-2026-6366: drupal — Fix

Description

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core: from 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7.

Is your site exposed to CVE-2026-6366?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.6

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0040

Probability of exploitation

0.32%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-915 CWE-915

Affected Products

Vendor	Product	Versions
drupal	drupal	8.0.0 — 10.5.9
drupal	drupal	10.6.0 — 10.6.7
drupal	drupal	11.0.0 — 11.2.11
drupal	drupal	11.3.0 — 11.3.7

References

Advisories & Patches

https://www.drupal.org/sa-core-2026-002

Frequently Asked Questions

What is CVE-2026-6366? +

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core: from 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7. It has a CVSS v3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2026-6366? +

CVE-2026-6366 has a CVSS v3.1 score of 6.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0040, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-6366? +

CVE-2026-6366 affects products from drupal, specifically: drupal. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-6366? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-43925

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, an unauthenticated mass assignment vulnerability in …

CVE-2026-56679

9Router is an AI router & token saver. Prior to 0.5.4, the PATCH /api/settings endpoint writes the entire request body …

CVE-2026-46478

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, …

CVE-2026-46477

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, …

CVE-2025-58367

DeepDiff is a project focused on Deep Difference and search of any Python data. Versions 5.0.0 through 8.6.0 are vulnerable …

CVE-2026-55223

c3p0 is a JDBC Connection pooling library. In versions prior to 0.14.0, c3p0 in combination with other libraries, can compose …

CVE-2026-6366