Super-intelligent AI with poor alignment could totally give us this knowledge. This information could already exist somewhere, or we might be only a few thoughts away from discovering it. At the very least, we probably already have some prerequisites to discover humanity-ending tech and we will probably continue to close the gap as we don’t know what the dangerous technology is.
Some argue this is how technological species would approach the great filter.
1. https://en.wikipedia.org/wiki/The_Funniest_Joke_in_the_World
At least, I hope not. I'm not foolish enough to plop down some of the more arcane Lovecraft writings into the "Plus" mode of GPT-4 and ask for translations, explanations, or analysis. Yes I am curious, but I also value my sanity.