MEDIUM 6.3 NVD
CVE-2025-23390
A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if
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.
References
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390
- https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8
This medium severity vulnerability with a CVSS score of 6.3 was published on 2026-10-15 via NVD.
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