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CVE-2026-25498— Craft has a potential authenticated Remote Code Execution via malicious attached Behavior

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开源的一套内容管理系统（CMS）。 Craft CMS 4.0.0-RC1版本至4.16.17版本和5.0.0-RC1版本至5.8.21版本存在安全漏洞，该漏洞源于assembleLayoutFromPost函数未清理用户配置数据，可能导致远程代码执行。

AI Predicted 8.1 Difficulty: Easy EPSS 1.19% · P67
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I. Basic Information for CVE-2026-25498

Vulnerability Information
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Vulnerability Title
Craft has a potential authenticated Remote Code Execution via malicious attached Behavior
Source: CVE Program / CVE List V5
Vulnerability Description
Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the assembleLayoutFromPost() function in src/services/Fields.php fails to sanitize user-supplied configuration data before passing it to Craft::createObject(). This allows authenticated administrators to inject malicious Yii2 behavior configurations that execute arbitrary system commands on the server. This vulnerability represents an unpatched variant of the behavior injection vulnerability addressed in CVE-2025-68455, affecting different endpoints through a separate code path. This vulnerability is fixed in 5.8.22.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 4.0.0-RC1版本至4.16.17版本和5.0.0-RC1版本至5.8.21版本存在安全漏洞，该漏洞源于assembleLayoutFromPost函数未清理用户配置数据，可能导致远程代码执行。
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, < 5.8.22 -

II. Public POCs for CVE-2026-25498

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III. Intelligence Information for CVE-2026-25498

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Vendor Advisories for CVE-2026-25498 (1)

Same Patch Batch · craftcms · 2026-02-09 · 8 CVEs total

CVE-2026-25494 Craft has a SSRF in GraphQL Asset Mutation via Alternative IP Notation
CVE-2026-25495 Craft has a SQL Injection in Element Indexes via criteria[orderBy]
CVE-2026-25497 Craft has a GraphQL Asset Mutation Privilege Escalation
CVE-2026-25493 Craft has a SSRF in GraphQL Asset Mutation via HTTP Redirect
CVE-2026-25492 Craft has a save_images_Asset graphql mutation can be abused to exfiltrate AWS credentials
CVE-2026-25496 Craft has a stored XSS in Number Prefix & Suffix Fields
CVE-2026-25491 Craft has a Stored XSS in Entry Types Name

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-470

V. Comments for CVE-2026-25498

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