Security Advisory

CVE-2026-56382

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-21 13:26:58

Last updated 2026-06-22 10:30:06

Assigner VulnCheck

CVSS score 8.6

State PUBLISHED

Description

Craft CMS (composer package craftcms/cms) versions >= 5.5.0 and <= 5.9.13 contain a remote code execution vulnerability in the FieldsController::actionRenderCardPreview() method, which passes the fieldLayoutConfig POST parameter directly to Fields::createLayout() without calling Component::cleanseConfig(). An authenticated admin user can inject Yii2 event handlers (e.g., 'on init' keys) via the fieldLayoutConfig parameter to execute arbitrary PHP code and disclose sensitive information (such as environment variables containing database credentials and CRAFT_SECURITY_KEY). The issue is fixed in version 5.9.14.

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