It's a membership platform where fans can pay to see their favourite smut stars on a subscription basis.
The database features the content of hundreds of creators organised by their screen names or pseudonyms.
The dump means many of OnlyFans performers now have their content available on the internet for free.
The twist is that OnlyFans claims that it hasn't been hacked.
Who's responsible for the leak? Earlier this week, links to huge databases of the site's content appeared across several forums and websites.
It boasts 18,000 performers in total, according to OnlyFans.