Heat oven to 350℉/177℃.
Line 2 cupcake pans with paper liners, or spray with baking spray. Set aside.
In a large bowl, whisk together flour, sugar, spice, cocoa, baking powder, baking soda, and salt.
In a medium bowl, whisk together pumpkin, buttermilk, eggs, oil, and vanilla.
Pour wet ingredients over dry ingredients.
Stir to mix.
Use a 3 Tablespoon scoop to portion batter into prepared pans.
Bake for 20 minutes, or until done.