The Serjeant at Arms is considering "as a matter of urgency" whether staff of All-Party Parliamentary Groups (APPGs) should be given passes to the Houses of Parliament.
It follows the decision to recall 83 passes in the wake of the cash for questions allegations.
A statement from the House of Commons said that the Serjeant, who is responsible for security matters, is looking into whether passes of this kind are "necessary or appropriate".
No passes of this kind will be issued until the matter is settled, the statement said, and if they are issued in future it is likely that applications will require "more information than at present about the purposes for which a pass is required".
The Government will bring forward a bill to introduce a statutory register of lobbyists before Parliament's summer recess in July.
The hastily announced Government bill to create a statutory register of lobbyists is a highly politicised piece of legislation.