All versions of the package private-ip are vulnerable to Server-Side Request Forgery (SSRF) where an attacker can provide an IP or hostname that resolves to a multicast IP address (224.0.0.0/4) which is not included as part of the private IP ranges in the packages source code.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.