Security vulnerability in Proxmox backup server code

[distortedbit.pro at tuta.io]

> I have discovered a potential security vulnerability and wanted to bring your attention to it. Please see
>
> https://gist.github.com/DistortedBit/6d3cd9c8d14a22376c6f43344306aaba
>
And 


https://github.com/proxmox/pve-storage/issues/9