I’m afraid I can’t find a valid option. I can’t verify that this issue will occur on WordPress.COM. I know that it can occur to many hosted wordpress sites.
The page you provided required that the issue be related to “sites hosted on WordPress.com and not the open source WordPress project”.
I should have specified that this is in regards to the open source project.
Third item on that:
For a security issue with the self-hosted version of WordPress, email security [at] wordpress.org with as much detail as you can.
So email please and thank you 🙂
DoH! Mika, thank you for doing my reading for me. Sorry for wasting your time.