Hi all,
Today I woke up to the same situation.
First thing in the morning I got an email from AIRBNB saying ¨Your reservation is confirmed¨ for somewhere in Latvia and paid in Chinese Yen (I am from New Zealand).
I blocked my card, changes my airbnb password, removed my credit card details from airnbnb.
I could also see that my account had been logged in from China (and US) in the last few days.
I have called 3 times to airnbn Customer Support in NZ and they have said this has been marked as urgent, hopefully tomorrow they will get back to me with a positive answer.