This exploit depends on the deployment. With PHP-FPM, an OOM during request startup terminates the child, so the corrupted state wouldn’t survive for subsequent requests to exploit. The challenge used PHP’s built-in server, where the worker was reused.

Doesn't mean that there isn't another exploit chain that can be used though. Challenge also had 4 workers total, so pining one worker wasn't that hard.

In online communities right now there’s a lot of demand for evidence of LLM capabilities being overblown. It’s unfortunate that even if the steal my bitcoin creator apologizes for spreading misinformation due to incompetence, the truth won’t be spread as widely.