Razorpay IFSC Ruby gem through 2.0.62 contains a server-side request forgery vulnerability that allows attackers to redirect API requests by supplying a crafted IFSC code to IFSC.find or IFSC#get. Attackers can submit network-path references or absolute URIs that URI.join resolves as a new host, sending GET requests to internal or attacker-chosen hosts and returning parsed response fields.