{"schema":"threatline.record/2","record":{"id":"CVE-2025-23390","aliases":["GHSA-xgpc-q899-67p8","GO-2025-3649"],"summary":"Fleet doesn’t validate a server’s certificate when connecting through SSH","details":"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.","categories":["Libraries & packages"],"product":"fleet","vendor":"SUSE","ecosystem":"Go","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-23390","source_modified_at":"2026-10-15T14:21:33.655Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"fleet","vendor":"SUSE","versions":[{"lessThan":"0.10.12","status":"affected","version":"0.9.0-rc.1","versionType":"semver"},{"lessThan":"0.11.7","status":"affected","version":"0.11.0","versionType":"semver"},{"lessThan":"0.12.2","status":"affected","version":"0.12.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.9.0-rc.1"},{"fixed":"0.10.12"}]}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.11.0"},{"fixed":"0.11.7"}]}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.12.0"},{"fixed":"0.12.2"}]}],"versions":[]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-23390","source_modified_at":"2026-10-15T14:21:33.655Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"fleet","ecosystem":null},"version":"0.10.12","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-23390","source_modified_at":"2026-10-15T14:21:33.655Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"fleet","ecosystem":null},"version":"0.11.7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-23390","source_modified_at":"2026-10-15T14:21:33.655Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"fleet","ecosystem":null},"version":"0.12.2","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"version":"0.10.12"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"version":"0.11.7"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","source_modified_at":"2025-05-05T22:00:39Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"github.com/rancher/fleet","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/fleet"},"version":"0.12.2"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.0019,"percentile":0.08251,"score_date":"2026-10-23"},"published_at":"2026-10-15T08:16:46.096Z","modified_at":"2026-10-15T14:21:33.655Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-23390","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T14:21:33.655Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-xgpc-q899-67p8","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2025-05-05T22:00:39Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-23390","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390"},{"source":"CVE List","url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-15T14:21:23.550366Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T14:21:33.655Z","content_hash":"7c2fd40fabd6943822746683301e4d73c667991b92df85555c58d11988158ee3"}}