Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (lowercase) is blocked but .PHP (uppercase) is not.
- https://securityprince.blogspot.in/2017/12/monstra-cms-304-arbitrary-file-upload.html
- https://www.exploit-db.com/exploits/43348/
- https://github.com/n0th1n3-00X/security_prince