CVE-2026-86732

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/craftcms/cms/security/advisories/GHSA-9wcj-wqqh-cqvg
https://www.vulncheck.com/advisories/craft-cms-before-5.10.12-remote-code-execution-via-element-index

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-08 16:18

Updated : 2026-09-10 14:17

NVD link : CVE-2026-86732

Mitre link : CVE-2026-86732

CVE.ORG link : CVE-2026-86732

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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