It's not 100% clear to me, from reading TFA, what the actual vuln is.
Suppose DankStartup folds and I, being a morally-dubious sort of fellow, purchase dankstartup.net which I then use to sign into DankStartup's O365, or DankStartup's ChatGPT as a DankStartup employee.
Isn't that a failure on DankStartup's part, to not shut down their business accounts? And isn't it also a failure on e.g. Microsoft or OpenAI's parts, since they're providing service to a defunct business entity who can't pay its bills?
To describe this as a vuln in oauth doesn't really make sense to me.
Suppose DankStartup folds and I, being a morally-dubious sort of fellow, purchase dankstartup.net which I then use to sign into DankStartup's O365, or DankStartup's ChatGPT as a DankStartup employee.
Isn't that a failure on DankStartup's part, to not shut down their business accounts? And isn't it also a failure on e.g. Microsoft or OpenAI's parts, since they're providing service to a defunct business entity who can't pay its bills?
To describe this as a vuln in oauth doesn't really make sense to me.