What are my chances to get some basic web interaction from a program using Lua for scripts extensibility?

Question

I'm very lost with this matter, so sorry if I'm asking for something too obvious or something, but I've been trying to get some low level info about it and, for what I've seen till now, I wouldn't even know where to start...

Anyway, the case is I'm trying to develop a tool script in Lua that I'd like at some point could be able to do some very basic interaction with a webpage, e.g. for downloading/looking for updates and little more. I'm already aware Lua can't do any of this per se (even I think it totally should at this time of life, but that would be another discussion 🙄), and the only ways I've read about pass for using external libraries/packages like LuaSocket or lua-http.

Well, besides all that external kind of stuff are far beyond my current capabilities in all the senses, how could I make them work anyway if I'm constrained to only can really do what the main app (Moho in this case, internally running Lua 5.2) allows me to do? Or as far as I know at least, because I remember at some point they added the possibility of extending some Lua possibilities by allowing access to a folder called modules where supposedly you could put your own libraries or whatever, not sure if even in form of DLLs, but besides that would also be another level to me, and there is zero documentation on that regard, once again I wouldn't even know where to start... Plus, if I'm going to have to build my own Lua compilation and include a lot of extra files, etc. for such a simple update checking feature... well, as much as I'd like its implementation, it simply could not worth all the mess.

So, once exposed, what do you think are really my changes of getting this super-basic internet interaction from my pure Lua script? Are really 0 as I'm afraid, or do you think I could not be considering other possible ways even if they were not the more efficient or recommendable?