Subaru part # 63269SG002 "hatch lift support / stay tailgate (rear gate, right)". Pin that attaches hydraulic lift to rear tailgate snapped in half when closing trunk - available for inspection. Lift extended fully, preventing closure of rear tailgate. Failure left tailgate solely held up with (1) remaining lift which could not fully support weight, letting door sag/droop and causing injury to scalp of (1) person. A 4 year old child was not injured, but was present - safety was at risk based on proximity to the door at the time of failure. Dealer advised no active recalls open on vehicle 5/26/26. Manufacturer does appear to have issued service bulletin 12-289-20 in 2020 providing warranty extension for this component. Component was not inspected. No warnings or symptoms were observed - corrosion noted on attachment point of life gate after removal.