“Can it escape the Chromium renderer sandbox? Or is that sandbox disabled?”
the real answer is more complicated as it is not necessarily a global setting and depends on what you call a “sandbox”
But if not addressed to me, there is no need to pay, you can start here: - https://www.electronjs.org/docs/tutorial/security - https://github.com/electron/electron/security/advisories
As you can see there are plenty of considerations and pitfalls to take into account. Best option is to enable contextIsolation for everything.
Further, Electron security is closely tied to Chrome security so that is one deep rabbit hole
Or maybe let's use some research language made by Wirth, and get access to all 10 of packages and 5 devs worldwide using it :-)
I didn't mention any programming language.
https://securelist.com/zero-day-vulnerability-in-telegram/83...
and others...
https://www.notebookcheck.net/Researchers-at-Symantec-discov...
the real answer is more complicated as it is not necessarily a global setting and depends on what you call a “sandbox”