Fugitive Wikileaks founder Julian Assange has been issued with a new Australian passport after lengthy negotiations over whether he was subject to an arrest warrant for a "serious foreign offense".

A Department of Foreign Affairs and Trade official confirmed in a Senate estimates hearing on Thursday that Mr Assange's 2018 application for a new passport had been accepted.

Consular and Crisis Management Division first assistant secretary Andrew Todd says "Mr Assange does have an Australian passport".