{"id":"CVE-2025-23390","sourceIdentifier":"meissner@suse.de","published":"2026-10-15T09:17:14.190","lastModified":"2026-10-19T22:10:00.130","vulnStatus":"Awaiting Analysis","cveTags":[],"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."},{"lang":"es","value":"Se ha identificado una vulnerabilidad en Fleet donde, por defecto, Fleet confiará automáticamente en el certificado de un servidor remoto al conectarse a través de SSH si el certificado no está configurado en el archivo ’known_hosts’. Esto podría permitir la ejecución de un ataque man-in-the-middle (MitM) contra Fleet. En caso de que el servidor al que se está conectando tenga una entrada de confianza en el archivo ’known_hosts’, entonces Fleet verificará correctamente la autenticidad del certificado presentado."}],"affected":[{"source":"meissner@suse.de","affectedData":[{"vendor":"SUSE","product":"fleet","defaultStatus":"unaffected","packageName":"github.com/rancher/fleet","versions":[{"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","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"meissner@suse.de","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":3.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-15T14:21:23.550366Z","id":"CVE-2025-23390","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"meissner@suse.de","type":"Secondary","description":[{"lang":"en","value":"CWE-295"}]}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390","source":"meissner@suse.de"},{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8","source":"meissner@suse.de"}]}