This is a security vulnerability and should be patched. Sorry, LinkedIn.
(Alternatively extension developers can modify their extensions to block these requests!)
I'm not sure how you'd patch that. Any request that’s made from the current open tab / window is made on behalf of the user. From my point of view, it's impossible for the browser to know, if the request is legit or not.
Is there no browser setting to defend against this attack? If not, there should be, versus relying on extension authors to configure or enable such a setting.
No kidding. I am shocked this works.
Does Firefox have a similar weakness?