This executable can upload local data.
This function can be performed by any unprivileged user.
kubectl proxy --address=0.0.0.0 --port=12345 --www=/path/to/dir/ --www-prefix=/x/
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
kubectl proxy --address=0.0.0.0 --port=12345 --www=/path/to/dir/ --www-prefix=/x/
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
kubectl proxy --address=0.0.0.0 --port=12345 --www=/path/to/dir/ --www-prefix=/x/