That's a far cry from finding a zero day in a hypervisor or even Docker, which OpenAI conveniently left out in their first statement by simply calling it a "sandbox".
https://jfrog.com/blog/jfrog-and-openai-collaboration-on-zer...
In many if not most environments where I have seen these used, they are used to bridge an access boundary and are absolutely security critical. Frequently (and probably in this application, too), they are used for security enforcement in an architecture where CI doesn't have Internet access, but does need to download packages. This is a pretty big deal for a lot of big companies; historically they have relied on stuff like package proxies to help protect them from supply chain compromises like post-install script exploits by preventing CI from being able to detonate an arbitrary Internet payload; if a supply-chain worm were to incorporate this exploit, it would be a lot scarier and more potent. Actually, from the supply-chain worm standpoint, this is arguably a bigger finding than a Docker escape - I suspect we can look forward to more shenanigans in this space coming soon.