A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not …

{
                    "product": "https://github.com/curl/curl",
                    "vendor": "n/a",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "7.73.0 and earlier"
                        }
                    ]
                }