The 19-year-old Republic of Ireland youth international joined QPR in 2014 but has yet to make a first-team appearance for them.
He spent time on loan at Dagenham earlier this season, making his debut against Stevenage before playing eight more games.
Mulraney was not named in Stevenage's squad to face Portsmouth on Saturday.
Find all the latest football transfers on our dedicated page.
League Two side Stevenage have signed QPR winger Jake Mulraney on a one-month loan deal.