Security Advisory

CVE-2026-86732

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-08 15:14:02

Last updated 2026-09-08 15:14:02

Assigner VulnCheck

CVSS score 8.8

State PUBLISHED

Description

Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes through the criteria parameter. Attackers can inject a malicious class via criteria[withTransforms][0][class] that reaches ImageTransforms::normalizeTransform(), then use a PHP gadget chain with yii\rbac\PhpManager to execute code by pointing itemFile to a request log containing PHP payload in the User-Agent header.

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