CVE-2026-90821— Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Crafty Controller
Quick assessment
Affected
Arcadia Technology, LLC Crafty Controller
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.
Crafty Controller 的 Webhook URL 表单字段组件中存在输入中和漏洞，允许经过身份验证的远程攻击者通过恶意的表单输入实施存储型跨站脚本（XSS）攻击。
Possible ATT&CK Techniques 1 AI
T1193Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Arcadia Technology, LLC | Crafty Controller | 4.2.0< 4.11.0 |
affected |
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I. Basic Information for CVE-2026-90821
Vulnerability Information
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Vulnerability Title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Crafty Controller
Source: CVE Program / CVE List V5
Vulnerability Description
An input neutralization vulnerability in the Webhook URL form field component of Crafty Controller allows a remote, authenticated attacker to perform stored XSS via malicious form input
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Arcadia Technology, LLC | Crafty Controller | 4.2.0 ~ 4.11.0 | - |
|
II. Public POCs for CVE-2026-90821
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-90821 (1)
IV. Related Vulnerabilities
Same product: Crafty Controller
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CVE-2026-18516
Improper Encoding or Escaping of Output in Crafty Controller -
CVE-2026-13716
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CVE-2026-0805
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CVE-2026-0963
Improper Limitation of a Pathname to a Restricted Directory
Same vendor: Arcadia Technology, LLC
-
CVE-2026-18516
Improper Encoding or Escaping of Output in Crafty Controller -
CVE-2026-13716
Path Traversal: '.../...//' in Crafty Controller -
CVE-2026-5652
Authorization Bypass Through User-Controlled Key in Crafty C -
CVE-2026-0805
Improper Limitation of a Pathname to a Restricted Directory -
CVE-2026-0963
Improper Limitation of a Pathname to a Restricted Directory
Same weakness: CWE-79
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V. Comments for CVE-2026-90821
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