Acidity comparison between cyclopropene and cyclopropane
This reference does in fact indicate that cyclopropene ($pK_a=29$) has a much higher a acidity than cyclopropane ($pK_a=44$).  Deprotonation at the vinylic hydrogen would account for this.  That cyclopropene is deprotonated at a vinylic carbon is briefly summarized here with a primary reference given.