Heat olive oil in a large stockpot over medium heat.
Add the diced onion and sauté for 5 to 7 minutes until translucent and soft.
Stir in the garlic and ginger, cooking for 60 seconds until fragrant.
Add the red curry paste and stir constantly for 2 minutes to toast the spices and release oils.
Incorporate the pumpkin puree and vegetable broth, whisking until the mixture is uniform.
Bring the liquid to a gentle simmer, then reduce heat to low and cook for 15 minutes to develop flavors.
Pour in the coconut milk and maple syrup, stirring to combine; heat for an additional 3 minutes.
Remove from heat and stir in the lime juice, salt, and pepper.
If a smoother texture is desired, use an immersion blender to process the soup until completely velvety.
Serve hot, garnished with fresh cilantro.