PT-2026-51230 · Craft Cms · Cms

Q1Uf3Ng · Published 2026-06-21 · Updated 2026-06-21 · CVE-2026-56382

Mitre

CVSS v3.1

7.2

High

Base vector

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

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.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-56382

Affected Products

Cms

References · 3

• https://github.com/craftcms/cms/security/advisories/GHSA-86vw-x4ww-x467 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56382 · Security Note
• https://vulncheck.com/advisories/craft-cms-remote-code-execution-via-missing-config-sanitization-in-fieldscontroller · Note