CVE-2026-85021— langgenius dify Splash Layout splash.tsx router.replace cross site scripting
Quick assessment
Affected
langgenius dify
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.
在 langgenius dify 1.13.0 版本中发现了一个漏洞。该漏洞位于组件 Splash Layout 中文件 的 函数中。对参数 的处理不当会导致跨站脚本攻击（XSS）。该攻击可远程执行，且利用方法已公开披露，可能被利用。厂商虽在披露初期已被联系，但始终未作出任何回应。
Possible ATT&CK Techniques 1 AI
T1189.001
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I. Basic Information for CVE-2026-85021
Vulnerability Information
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Vulnerability Title
langgenius dify Splash Layout splash.tsx router.replace cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in langgenius dify 1.13.0. Affected is the function router.replace of the file web/app/(shareLayout)/components/splash.tsx of the component Splash Layout. This manipulation of the argument redirect_url causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 |
|---|---|---|---|---|
| langgenius | dify | 1.13.0 |
cpe:2.3:a:langgenius:dify:*:*:*:*:*:*:*:*
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II. Public POCs for CVE-2026-85021
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-85021 (3)
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🔗 Page not found · GitHub · GitHub broken-link
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🔗 CVE-2026-85021 langgenius dify Splash Layout splash.tsx router.replace cross site scripting Read full article vdb-entry technical-description
Proof of Concept for CVE-2026-85021 (1)
Other References for CVE-2026-85021 (3)
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🔗 CVE-2026-85021 in dify third-party-advisory
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🔗 Submit #880601: langgenius dify 1.13.0 DOM-Based XSS, Open Redirect third-party-advisory
IV. Related Vulnerabilities
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Same vendor: langgenius
-
CVE-2026-85022
langgenius dify WebApp Sign-In mail-and-password-auth.tsx ro -
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Dify AI Workflow oauth_redirect_url Open Redirect Vulnerabil -
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Dify < 1.16.0-rc1 SQL Injection via MyScale Vector Store sea -
CVE-2026-41949
Dify < 1.14.2 Authorization Bypass via File Preview Endpoint
Same weakness: CWE-79
-
CVE-2026-85022
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V. Comments for CVE-2026-85021
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