American reality TV celebrity Josh Duggar has been embroiled in a cheating controversy thanks to the Ashley Madison data breach.

This week, hackers released stolen data to the public from the infidelity dating website and Duggar is one of the millions exposed.

Duggar was best known from reality TV program 19 Kids and Counting, which followed the life of a conservative Christian family in America.

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The 27-year-old is married with four children but it’s been revealed he had an account with the website. 

According to CNN, Duggar paid Ashley Madison $986 US between 2012 and 2015 for its service.

He took on the username “josh_the_man” and is reported to have described himself as “attached male seeking female”.

Earlier this year Duggar was forced to apologise and resign as head of a conservative Christian lobby group after it emerged he allegedly molested young girls while a teenager.

“I have been the biggest hypocrite ever,” Duggar said in a statement on Thursday.

“While espousing faith and family values, I have secretly over the last several years been viewing pornography on the internet and this became a secret addiction and I became unfaithful to my wife.

“I brought hurt and a reproach to my family, close friends and the fans of our show with my actions that happened when I was 14-15 years old, and now I have re-broken their trust.”