Good question! If the CFL is covered by a lens it should be okay.
However, the majority of CFLs are to be installed in the vertical position not the horizontal position. (Fire Hazard Warning) If you install a CFL that is not rated for horizontal fixtures it will crack under its own heat, or in your case faster with the additional heat from the stove.
Consider buying a LED it's so much better and the price is coming down too!!!
Hope this helps!