The Game of Thrones actor is said to have stumbled to the ground after a night out in the Groucho Club in London last night (October 3).
He allegedly shouted at the paparazzo and lunged at him after he left the bar in the early hours, The Sun reports.
Police were later called and interviewed the actor about the incident. His friend was then able to take him back into the venue for more drinks.
Bean was later seen leaving the bar at around 2.30am, while his wounded hand had been cleaned up.
Earlier this year, Bean was accused of harassing his ex-wife Georgina Sutcliffe.
However, he was later informed that he would not face any charges after the case was dropped in July.
Sean Bean recently signed up to star in the upcoming post-apocalyptic drama Scorched Earth.