Server-Side Request Forgery (SSRF)
A Server Side Request Forgery (SSRF) vulnerability in tools/files/importers/remote.php in concrete5 before 8.3.0 can lead to attacks on the local network and mapping of the internal network, because of URL functionality on the File Manager page.
CWE-918 - Server-Side Request Forgery (SSRF)
Server-side request forgery (SSRF) is a weakness that allows an attacker to send an arbitrary request, making it appear that the request was sent by the server. This request may bypass a firewall that would normally prevent direct access to the URL. The impact of this vulnerability can vary from unauthorized access to files and sensitive information to remote code execution.