The party leader said if he became Prime Minister he would negotiate a new Brexit deal with Brussels and then put it to a public vote. Mr Corbyn would ask the nation to choose between his divorce deal and staying in the EU but hinted he would not campaign in favour of either. His stance on the subject has sparked a wave of fury and prompted accusations Mr Corbyn wants to continue sitting on the fence over Brexit.
It comes just days before Labour’s annual conference in Brighton is due to get underway.
Former Labour Cabinet Minister Alan Johnson lead the criticism, saying the party would be “mowed down” at the next election if it carried on trying to please both Leave and Remain voters.
Mr Corbyn’s political opponents accused him of lacking the “courage” to take a firm position on Brexit.
His opponents also suggested he was guilty of a “shameful abdication of leadership”.
The scale of Brexit divisions in the Labour Party was highlighted after First Minister of Wales Mark Drakeford wrote to Welsh Labour members to say his wing of the party will campaign to Remain.
The row over Brexit sets up what is likely to be a titanic conference battle next week as activists and MPs try to force Mr Corbyn to change tack and fight to keep Britain in the EU.
More to follow