CVE-2026-56672— ComfyUI 因缺少内容类型过滤导致存储型XSS漏洞
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一、 漏洞 CVE-2026-56672 基础信息
漏洞信息
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Vulnerability Title
ComfyUI: Stored XSS via /userdata/{file} due to Missing Content-Type Sanitization
来源: CVE Program / CVE List V5
Vulnerability Description
ComfyUI is a node-based diffusion model GUI, API, and backend. Prior to 0.28.0, GET /userdata/{file} served user-controlled HTML and SVG files with extension-derived content types, allowing stored cross-site scripting in the ComfyUI origin and access to browser-stored API tokens, settings, workflows, and authenticated-equivalent API calls. The handler used web.FileResponse(path), so an uploaded .html/.svg was served as text/html/image/svg+xml. POST /userdata stores arbitrary request bodies (confined to the user's userdata directory). When a victim navigated to the file URL, the embedded script executed same-origin. The /view endpoint already forced dangerous MIME types to download; that protection had never been applied to /userdata. This issue is fixed in version 0.28.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
来源: 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)
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-56672 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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Qwen3.6-35B-A3B · 3690 chars
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三、漏洞 CVE-2026-56672 的情报信息
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CVE-2026-56672 厂商安全公告 (1)
CVE-2026-56672 其他参考 (1)
- 🔗 Release v0.28.0 · Comfy-Org/ComfyUI · GitHubx_refsource_MISC
同批安全公告 · Comfy-Org · 2026-07-31 · 共 5 条
| CVE-2026-68771 | 9.8 CRITICAL | ComfyUI 0.23.0 未授权远程代码执行漏洞 |
| CVE-2026-56670 | 8.2 HIGH | ComfyUI /view 端点 SVG 上传存储型 XSS 漏洞 |
| CVE-2026-56673 | 7.5 HIGH | ComfyUI 图像加载路径遍历漏洞 |
| CVE-2026-56671 | 7.5 HIGH | ComfyUI /experiment/models/preview 路径遍历漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-56672
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