The contact owns a 2016 Cadillac CTS. The contact stated while the vehicle was parked, the carbon fiber-optic piece on the rear passenger door was fractured. The contact stated the occupant was exiting the rear passenger’s door when the occupant was stabbed by the carbon fiber-optic piece. The contact stated that the occupant was stabbed in the back of the right arm. No medical attention was needed. The contact stated that the carbon fiber optic pieces on all four of the door panels and the glove compartment had been replaced several times. The contact stated the glove compartment carbon fiber optic piece was replaced three times. In addition, the contact stated that the carbon fiber optic pieces on each door panel had been replaced twice. The manufacturer was made aware of the failure, and several cases were filed. The failure mileage was approximately 20,000.