{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-23390","assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","state":"PUBLISHED","assignerShortName":"suse","dateReserved":"2025-01-15T12:39:03.324Z","datePublished":"2026-10-15T08:16:46.096Z","dateUpdated":"2026-10-15T14:21:33.655Z"},"containers":{"cna":{"providerMetadata":{"orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","shortName":"suse","dateUpdated":"2026-10-15T08:16:46.096Z"},"title":"Fleet doesn’t validate a server’s certificate when connecting through SSH","datePublic":"2025-04-25T15:11:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-295","description":"CWE-295: Improper certificate validation","type":"CWE"}]}],"affected":[{"vendor":"SUSE","product":"fleet","packageName":"github.com/rancher/fleet","versions":[{"status":"affected","version":"0.9.0-rc.1","lessThan":"0.10.12","versionType":"semver"},{"status":"affected","version":"0.11.0","lessThan":"0.11.7","versionType":"semver"},{"status":"affected","version":"0.12.0","lessThan":"0.12.2","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p>"}]}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390"},{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":6.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T14:21:23.550366Z","id":"CVE-2025-23390","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-15T14:21:33.655Z"}}]}}