> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/zh/web-vulnerabilities/cross-origin-resource-sharing-cors-attack.md).

# 跨域资源共享（CORS）

**跨域资源共享** （CORS）是一种浏览器安全机制，用于控制哪些外部来源可以访问 Web 应用中的资源。若服务器反射不受信任的来源，或对凭证的允许范围过于宽泛，配置错误可能会暴露已认证数据。

## 备注

* [CORS 源配置错误](/zh/web-vulnerabilities/cors-origin-pentesting-web.md)


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