CVE-2025-23390

{
  "id": "CVE-2025-23390",
  "sourceIdentifier": "[email protected]",
  "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": "[email protected]",
      "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": "[email protected]",
        "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": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8",
      "source": "[email protected]"
    }
  ]
}