CVE-2026-6366

CVE-2026-6366: Drupal core - Moderately critical - Gadget Chain - SA-CORE-2026-002

Vendor Drupal
Product Drupal core
Weakness CWE-915
Published May 19, 2026
Last update May 21, 2026

CVSS base score

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

A vulnerability in Drupal core versions 8.0.0 through 10.5.8 allows an attacker to exploit an unknown weakness. The exact nature of the vulnerability cannot be determined from available metadata. Update to Drupal 10.5.9 or later to remediate.

What an attacker can do

03Attacker Capabilities

Unknown; insufficient technical details available.

Potential impact on your site

04Site Impact

Drupal sites running versions 8.0.0–10.5.8 are affected. Update immediately to 10.5.9.

Conditions required to exploit

05Prerequisites

Unknown; insufficient technical details available.

Key dates

06Disclosure timeline

May 19, 2026 CVE published
May 21, 2026 Record updated