> 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/access-control/user-id-controlled-by-unpredictable-guid-parameter.md).
# 由不可预测 GUID 参数控制的用户 ID
由不可预测 GUID 参数控制的用户 ID，PortSwigger Web Security Academy 实验笔记，包括利用流程、载荷测试、Burp Suite 验证以及修复上下文。
#### 由参数控制的用户 ID
本实验展示了一个 **水平权限提升** 问题，出现在用户账户页面。/ 其特殊之处在于 **用户通过 GUID 进行标识**，也就是较长且随机的凭证，例如：
```bash
9e2f3fc0-7035-48ed-ad6d-f643690c7b9d
```
连接到账户后 **wiener:peter**，你可以在“我的账户”部分看到自己的 GUID。
#### **通过公开内容恢复 GUID**
通过浏览网站，我们可以在 **可见的发布内容中找到** 其他用户的 GUID：
* 管理员的 GUID 出现在他的一篇帖子中。
同样地，我们可以从 **carlos**.
```bash
?userId=5abc76d3-7763-4be9-83d1-c6181bcdf0b5
```
#### **操作：访问 Carlos 账户**
该账户页面可通过一个可控参数访问：
```bash
my-account?id=5abc76d3-7763-4be9-83d1-c6181bcdf0b5
```
只需将我们的 GUID 替换为 **carlos**，我们就能访问他的账户：
---
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