A pink fluid leak is commonly caused by a seep in the transmission, power steering, or coolant system since they typically use a pink-colored fluid to operate. The most common culprits are seal issues or cracks in the transmission cooler, heater hoses, or power steering cooler.
Moreover, you might want to get this checked quickly. Leaking issues typically cause progressive damage in car parts and components depending on the chemical reactions they cause.
In addition, car systems that require the leaking fluid might overstress by working without a proper liquid volume; this results in further repairs. Consider having a professional technician check into this; they're quick to join you in finding the root cause, preventing it from developing, and ensuring your car's health.