If this was in the US, all financial institutions need to audit their code to comply with NIST SP 800-53.
If they haven’t, it would be ethically dubious for you to not report it.
In my experience, most devs and companies don't consider the dependencies they load 'their' code. They only look at the code they write, not everything they deploy.
These were all multinationals, with very significant US presence.
In theory there is no difference between theory and practice, but in practice there is.
> If they haven’t, it would be ethically dubious for you to not report it.
I can report all I want, someone needs to act on that report for it to have an effect.
There are people out there who think that some static analysis tool plugged into their CI/CD pipeline is the equivalent of a code audit.