CVE-2026-86732
Craft CMS before 5.10.12 Remote Code Execution via element-index
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | craftcms |
| Product | cms |
| Published | Sep 8, 2026 |
| Last Updated | Sep 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
craftcms / cms
5.0.0-RC1 < 5.10.12
References
Credits
🔍 Haruna38