Comment by b112
6 hours ago
Maybe, but how long are the extension ids? And if they are random, how long to scan a trillion random alphanumeric ids, to find matches?
I presume the extension knows when it wants to access resources of its own. But random javascript, doesn't.
The extension IDs are UUIDs/GUIDs, so 128 bits of entropy. No site is going to be able to successfully scan that full range.
And just in case the magnitude of that isn't obvious to people, that means there are 340,282,366,920,938,463,463,374,607,431,768,211,456 total possible UUIDs. Good luck.
ChatGPT told me it can be done though.
It won't disclose how, as it says it has had several users report it. And that it expects 50% of the bounty, and will use it for GPU upgrades.