Vulnerability in EPiServer.Forms
How I can to clean episerver.data file or maybe clean my cms data so that I could then to recover all of my episerver data backup ?
Andrey, your question is a bit unclear. Are you talking about the .episerverdata import/export files?
You can rename these to .zip and unpack them on your computer to look inside (contains .xml and pagefiles).
What data are you trying to clean/recover?