Tiny File Manager version 2.4.8 executes the code of files uploaded by users of the application, instead of just returning them for download. This is possible because the application is vulnerable to insecure file upload.

Tiny File Manager version 2.4.8 allows an unauthenticated remote attacker to execute arbitrary code remotely on the server. This is possible because the application is vulnerable to CSRF, processes uploaded files server-side (instead of just returning them for download), and allows unauthenticated users to access uploaded files.