Langflow - Stored XSS via Malicious SVG Upload

The '/api/v1/files/images/{flow_id}/{file_name}' endpoint serves SVG files with the 'image/svg+xml' content type without sanitizing their content. Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.

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在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Langflow 安全漏洞

Langflow是Langflow开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow存在安全漏洞，该漏洞源于端点/api/v1/files/images/{flow_id}/{file_name}在提供SVG文件时未清理内容，可能导致存储型跨站脚本，攻击者可上传恶意SVG文件在其他用户查看时执行任意JavaScript，窃取身份验证令牌。

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