A 58-year-old man from Delhi presents to the emergency department with a stab wound to the right groin sustained during an altercation 2 hours ago. On examination, he is hemodynamically unstable with BP 85/50 mmHg and HR 118/min. There is active bleeding from a wound located 3 cm below the inguinal ligament and 2 cm medial to the midpoint between the anterior superior iliac spine and pubic tubercle. The wound is in the medial aspect of the groin. Which vessel is most likely injured?