References https://mrxn.net/jswz/hanvon-efacego-queryMeetingFile-sqli.html https://blog.csdn.net/murphysec/article/details/149058449 https://github.com/Mr-xn/Penetration_Testing_POC https://www.tutusec.com/2123.html https://cn-sec.com/archives/4656282.html https://zhuanlan.zhihu.com/p/1932214870562047555 https://mrxn.net/jswz/hanvon-efacego-meetingFileManage-sqli.html https://www.zhihu.com/question/652641802/answer/1927524838223901200