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CVE-2026-86732— Craft CMS before 5.10.12 Remote Code Execution via element-index

Quick assessment

Affected
craftcms cms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.10.12之前版本存在代码注入漏洞，该漏洞源于element-index端点对criteria参数处理不当，允许已认证的内容编辑器实例化任意类，攻击者可通过criteria[withTransforms][0][class]注入恶意类，并利用PHP gadget链使itemFile指向包含User-Agent请求日志中的恶意负载，从而执行任意代码。

CVSS 8.8 · High EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1204 · User Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
craftcms cms 5.0.0-RC1< 5.10.12 affected
5.10.12 unaffected
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I. Basic Information for CVE-2026-86732

Vulnerability Information
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Vulnerability Title
Craft CMS before 5.10.12 Remote Code Execution via element-index
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.10.12之前版本存在代码注入漏洞，该漏洞源于element-index端点对criteria参数处理不当，允许已认证的内容编辑器实例化任意类，攻击者可通过criteria[withTransforms][0][class]注入恶意类，并利用PHP gadget链使itemFile指向包含User-Agent请求日志中的恶意负载，从而执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms 5.0.0-RC1 ~ 5.10.12 -

II. Public POCs for CVE-2026-86732

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III. Intelligence Information for CVE-2026-86732

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Vendor Advisories for CVE-2026-86732 (2)

Same Patch Batch · craftcms · 2026-09-08 · 3 CVEs total

CVE-2026-86730 8.8 HIGH Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE
CVE-2026-86731 6.5 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.12 Permission Escalation via UsersController

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-94

V. Comments for CVE-2026-86732

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