CVE-2026-42138— Dify Vulnerable to Stored XSS via SVG-file upload
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I. Basic Information for CVE-2026-42138
Vulnerability Information
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Vulnerability Title
Dify Vulnerable to Stored XSS via SVG-file upload
Source: NVD (National Vulnerability Database)
Vulnerability Description
Dify is an open-source LLM app development platform. Prior to version 1.13.1, using the method POST /api/files/upload, any unauthenticated user can upload an SVG file with XSS. The method POST /v1/files/upload, which requires authentication through the application API, is also vulnerable. This issue has been patched in version 1.13.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
dify 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dify是LangGenius开源的一个开源的 LLM 应用程序开发平台。 Dify 1.13.1之前版本存在跨站脚本漏洞，该漏洞源于POST /api/files/upload方法允许未认证用户上传包含跨站脚本的SVG文件，POST /v1/files/upload方法也存在此漏洞。
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 |
|---|---|---|---|---|
| langgenius | dify | < 1.13.1 | - |
II. Public POCs for CVE-2026-42138
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|---|
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- Stored XSS via SVG-file upload · Advisory · langgenius/dify · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-42138
IV. Related Vulnerabilities
Same product: dify
- CVE-2026-41950
Dify < 1.14.0 Authorization Bypass via File UUID - CVE-2026-34082
Dify has IDOR in deleting someone else's chat conversation - CVE-2026-6619
langgenius dify ImagePreview image-preview.tsx openInNewTab - CVE-2026-6618
langgenius dify ApiBasedToolSchemaParser parser.py parse_ope - CVE-2026-6617
langgenius dify ApiToolManageService api_tools_manage_servic
Same vendor: langgenius
- CVE-2026-41950
Dify < 1.14.0 Authorization Bypass via File UUID - CVE-2026-34082
Dify has IDOR in deleting someone else's chat conversation - CVE-2026-6619
langgenius dify ImagePreview image-preview.tsx openInNewTab - CVE-2026-6618
langgenius dify ApiBasedToolSchemaParser parser.py parse_ope - CVE-2026-6617
langgenius dify ApiToolManageService api_tools_manage_servic
Same weakness: CWE-79
- CVE-2026-8262
Devs Palace ERP Online chart-save cross site scripting - CVE-2026-8256
Devs Palace ERP Online mr-save cross site scripting - CVE-2026-8255
Devs Palace ERP Online add_new_customer cross site scripting - CVE-2026-8254
Devs Palace ERP Online sales_save cross site scripting - CVE-2026-8253
Devs Palace ERP Online purchase_save cross site scripting
V. Comments for CVE-2026-42138
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