The Labour leader was photographed at a Passover Seder hosted by Jewdas, a satirical group which describes itself as radical and is highly critical of mainstream Jewish organisations.
Last week Jewdas attacked the Board of Deputies of British Jews and the Jewish Leadership Council’s response to the Labour anti-Semitism scandal as playing a dangerous game with people’s lives.
It also reportedly described the row as the work of cynical manipulations by people whose express loyalty is to the Conservative Party and the right wing of the Labour Party.
MPs and campaigners warned Mr Corbyn’s decision to attend the group’s meeting amounted to a blatant dismissal of concerns about anti-Semitism in the party because of its controversial views on other Jewish organisations.
Mr Corbyn’s spokesman reportedly said he attended in a personal capacity, and not in his role as Labour leader.
It comes at a time when Labour has dropped a council candidate and suspended him from the party after he posted a series of anti-Semitic messages online, including some that denied the Holocaust.
The Guido Fawkes website published leaked audio recordings from the event on Monday evening, claiming that Mr Corbyn stayed for several hours and took a beetroot from his allotment as a gift. Guests are heard booing the name of Jonathan Arkush, the President of the Board of Deputies of British Jews, and shouting f**k capitalism.
Labour MPs John Woodcock and Angela Smith both tweeted their frustration at his decision to attend.
Mr Woodcock, who it was claimed last week was on the brink of resigning as a Labour MP, tweeted: This is deliberately baiting the mainstream Jewish community days after they pleaded with him to tackle antisemitism. And he must know that meeting them now will give his members the message that the group’s extreme views are ok. Irresponsible and dangerous.
Ms Smith added: Corbyn’s attendance at the Jewdas seber reads as a blatant dismissal of the case made for tackling anti-Semitism in Labour.
Danny Stone, director of the Anti-Semitism policy trust, said: Jewdas have long claimed to be a group that satirises the Jewish community. Satire only works if the people seeing it understand it to be just that.
At this time of heightened sensivity, I would expect Jeremy Corbyn to be very careful not to give the impression he endorses, or is conferring legitimacy upon, anyone seeking to mock or cast aspersions on mainstream Jewish communal and others concerns about antisemitism.
In a difficult day for Labour, council candidate Roy Smart was barred from standing for Labour in Tunbridge Wells after posting images on Facebook, including one called the Holocaust deprogramming course.
It said: Free yourself from a lifetime of Holo-brainwashing about ‘six million’ Jews ‘gassed’ in ‘gas chambers’ disguised as shower rooms, the Jewish News reported. Mr Smart claimed he was questioning the Holocaust, not denying it.
And further pressure was also put on the party to sack a second council candidate after it emerged Jonny Morris is standing for re-election, despite being suspended last year for giving a Nazi salute .
Mr Morris, a current Labour councillor, was allowed to rejoin the party after undergoing an equalities training session following his suspension.
Momentum, the grassroots organisation supporting Mr Corbyn, also warned yesterday that reports of abuse and anti-Semitism in the party are worse than previously thought and cannot be ignored.
Unconscious anti-Jewish bias was more widespread than many of us understood even a few months ago, it said.
When asked whether he thought it was appropriate for him to stand again, Mr Morris told The Daily Telegraph: Yes I do, it has nothing to do with anti-Semitism and the issue has been dealt with by the Labour Party and is now closed.
In a statement, Momentum said the anti-Semitism row had been used to some extent to undermine Mr Corbyn. But in its strongest condemnation of the way the problem has been handled, it added that it was disappointed in the failure to date to deal with [accusations of anti-Semitism] in a sufficiently decisive, swift and transparent manner.