After an interview I had I realized I had talked openly about a flaw I have, which I'm not sure is desirable in an interview where the goal is to make appear as marketable as possible. At the same time everyone has flaws and should be aware of them, so showing that to the employer seems okay. I am assuming flaws like personality/character deficits or minor health issues. Not something with either a heavy stigma attached or that will make the job impossible to do.
It's definitely not ideal to talk about your flaws in an interview, unless you're spinning it into a positive ("sometimes I think I'm just too much of a workaholic") That being said, it's not necessarily a torpedo in the water, either.
How do you feel about the rest of the interview? Did it go well, overall?
I would just try to forget any implications of what happened and move on. If they bring it up in the future, just say you were trying to be open and honest and got carried away (ie: the truth.) Being self-aware of your own flaws means you can work to improve them over time. If they don't mention it, you don't either.