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CVE-2026-56393— Craft CMS - Multiple Stored Cross-Site Scripting in Settings Names and Field Options

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.

CraftCMS cms是CraftCMS的内容管理系统。 Craft CMS 4.0.0-RC1至4.17.0-beta.1之前版本和5.0.0-RC1至5.9.0-beta.1之前版本存在跨站脚本漏洞，该漏洞源于设置名称和字段选项标签在渲染时未进行清理，可能导致已认证的管理员在启用allowAdminChanges的情况下将恶意有效载荷注入部分名称、卷名称、用户组名称、全局设置名称、生成字段名称、复选框/单选选项标签和自定义源标签，从而在其他用户控制面板会话中执行任意JavaScript。

CVSS 4.8 · Medium EPSS 0.32% · P23

Affected Version Matrix 4

VendorProduct Version RangeStatus
craftcms cms 5.0.0-RC1< 5.9.0-beta.1 affected
5.9.0-beta.1 unaffected
4.0.0-RC1< 4.17.0-beta.1 affected
4.17.0-beta.1 unaffected
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I. Basic Information for CVE-2026-56393

Vulnerability Information
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Vulnerability Title
Craft CMS - Multiple Stored Cross-Site Scripting in Settings Names and Field Options
Source: CVE Program / CVE List V5
Vulnerability Description
Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rendered without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume names, user group names, global set names, generated field names, checkbox/radio option labels, and custom source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CraftCMS cms是CraftCMS的内容管理系统。 Craft CMS 4.0.0-RC1至4.17.0-beta.1之前版本和5.0.0-RC1至5.9.0-beta.1之前版本存在跨站脚本漏洞，该漏洞源于设置名称和字段选项标签在渲染时未进行清理，可能导致已认证的管理员在启用allowAdminChanges的情况下将恶意有效载荷注入部分名称、卷名称、用户组名称、全局设置名称、生成字段名称、复选框/单选选项标签和自定义源标签，从而在其他用户控制面板会话中执行任意JavaScript。
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 ~ 5.9.0-beta.1 -

II. Public POCs for CVE-2026-56393

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III. Intelligence Information for CVE-2026-56393

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Patches & Fixes for CVE-2026-56393 (2)

Vendor Advisories for CVE-2026-56393 (2)

Same Patch Batch · craftcms · 2026-06-21 · 7 CVEs total

CVE-2026-56382 7.2 HIGH Craft CMS - Remote Code Execution via Missing Config Sanitization in FieldsController
CVE-2026-56394 6.5 MEDIUM Craft CMS - Authenticated Path Traversal in assets/icon Extension Parameter
CVE-2026-56381 4.8 MEDIUM Craft CMS - Stored XSS via User Group Name in User Permissions Page
CVE-2026-56383 4.8 MEDIUM Craft CMS - Stored XSS in Table Field via Row Heading Column Type
CVE-2026-56384 4.3 MEDIUM Craft CMS - Missing Authorization in assets/preview-thumb Endpoint
CVE-2026-56385 4.3 MEDIUM Craft CMS - Authorization Bypass in assets/preview-file Endpoint

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-79

V. Comments for CVE-2026-56393

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