The new scandal comes just a few months after Duggar's admission he molested five young girls when he was a teenager. In response, TLC to canceled his family's reality show, 19 Kids and Counting.

Duggar said that over the past "several years," he became addicted to porn. This led to him being "unfaithful" to his wife, Anna, with whom he has four children, including a newborn.

Duggar didn't address whether he used Ashley Madison, but acknowledged that he conducted his infidelities while simultaneously advocating "family values."

"I have been the biggest hypocrite ever. ... I am so ashamed of the double life that I have been living and am grieved for the hurt, pain and disgrace my sin has caused my wife and family, and most of all Jesus and all those who profess faith in Him," he said in part.