CVE-2026-86732 — Craft CMS before 5.10.12 Remote Code Execution via element-index
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 …
Published: 2026-09-08 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7