测试fastjson漏洞时存在bug

<img width="1256" height="1289" alt="Image" src="https://github.com/user-attachments/assets/94ed5a1c-4007-461b-86bc-29613dc82bc8" />

<img width="1240" height="755" alt="Image" src="https://github.com/user-attachments/assets/e813251d-c43c-4df7-9c76-bbb1a5f148ee" />

以上是打的vulnhub靶场，他将所有参数都试了fastjson payload，唯独没有测试整个json体