SAP NetWeaver application, due to insufficient input validation, allows an attacker to send a crafted request from a vulnerable web application targeting internal systems behind firewalls that are normally inaccessible to an attacker from the external network, resulting in a Server-Side Request Forgery vulnerability. Thus, having a low impact on confidentiality.
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.