HIGH

CVE-2026-86732

Craft CMS before 5.10.12 Remote Code Execution via element-index

CVSS v3

8.8

HIGH

EPSS Score

0.9 %

exploit probability, as of 2026-09-28

CISA KEV

known exploited

Exploitation

—

SSVC status

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 heade

Technical details

Published: 2026-09-08
Last Modified: 2026-09-08

Frequently asked questions

What is CVE-2026-86732?

Is CVE-2026-86732 actively exploited?

Active exploitation of CVE-2026-86732 has not been confirmed. Its EPSS score was 0.9% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-86732?

CVE-2026-86732 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2026-86732 affecting your environment?

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