{"id":"CVE-2025-23390","published":"2026-10-15T09:17:14.190","lastModified":"2026-10-16T19:55:59.740","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.","cvssScore":6.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cwes":["CWE-295"],"vendors":[],"products":[],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390","tags":[]},{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8","tags":[]}],"exploitRefs":[{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8","tags":[]}],"hasPoc":true,"ai":null}