{"id":"CVE-2025-23390","revision":"04c6a837aa9a426d81aa906de3efa607","records":[{"revision":"04c6a837aa9a426d81aa906de3efa607","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-23390","aliases":[],"title":"Fleet doesn’t validate a server’s certificate when connecting through SSH","description":"A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file. This could allow the execution of a man-in-the-middle (MitM) attack against Fleet. In case the server that is being connected to has a trusted entry in the known_hosts file, then Fleet will correctly check the authenticity of the presented certificate.","state":0,"publishedAt":"2026-10-15T08:16:46.096+00:00","modifiedAt":"2026-10-15T14:21:33.655+00:00","affected":[{"ecosystem":"Vendor product","name":"github.com/rancher/fleet","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SUSE\",\n                    \"product\": \"fleet\",\n                    \"packageName\": \"github.com/rancher/fleet\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.9.0-rc.1\",\n                            \"lessThan\": \"0.10.12\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.11.0\",\n                            \"lessThan\": \"0.11.7\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.12.0\",\n                            \"lessThan\": \"0.12.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","score":6.3,"severity":"MEDIUM"}],"references":["https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390","https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-23390","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-23390","identifiers":["CVE-2025-23390"]},"retained":false,"historicalAffected":[]}],"coverage":[]}