Label Studio allows Cross-Site Scripting (XSS) via GET request to `/projects/upload-example` endpoint

Label Studio is an open source data labeling tool. Prior to version 1.16.0, Label Studio's `/projects/upload-example` endpoint allows injection of arbitrary HTML through a `GET` request with an appropriately crafted `label_config` query parameter. By crafting a specially formatted XML label config with inline task data containing malicious HTML/JavaScript, an attacker can achieve Cross-Site Scripting (XSS). While the application has a Content Security Policy (CSP), it is only set in report-only mode, making it ineffective at preventing script execution. The vulnerability exists because the upload-example endpoint renders user-provided HTML content without proper sanitization on a GET request. This allows attackers to inject and execute arbitrary JavaScript in victims' browsers by getting them to visit a maliciously crafted URL. This is considered vulnerable because it enables attackers to execute JavaScript in victims' contexts, potentially allowing theft of sensitive data, session hijacking, or other malicious actions. Version 1.16.0 contains a patch for the issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Label Studio 跨站脚本漏洞

Label Studio是Heartex开源的一个开源数据标注工具。允许您使用简单明了的 UI 标记音频、文本、图像、视频和时间序列等数据类型，并导出为各种模型格式。 Label Studio 1.16.0之前版本存在跨站脚本漏洞，该漏洞源于允许通过GET请求注入任意HTML，并带有适当制作的查询参数。攻击者可以通过制作特殊格式的XML标签配置实现跨站脚本(XSS)攻击。

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