CVE-2026-34205

{
  "id": "CVE-2026-34205",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-27T20:16:35.360",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Home Assistant is open source home automation software that puts local control and privacy first. Home Assistant apps (formerly add-ons) configured with host network mode expose unauthenticated endpoints bound to the internal Docker bridge interface to the local network. On Linux, this configuration does not restrict access to the app as intended, allowing any device on the same network to reach these endpoints without authentication. Home Assistant Supervisor 2026.03.02 addresses the issue."
    },
    {
      "lang": "es",
      "value": "Home Assistant es un software de automatización del hogar de código abierto que prioriza el control local y la privacidad. Las aplicaciones de Home Assistant (anteriormente complementos) configuradas con el modo de red de host exponen puntos finales no autenticados vinculados a la interfaz de puente interna de Docker a la red local. En Linux, esta configuración no restringe el acceso a la aplicación como se pretendía, permitiendo que cualquier dispositivo en la misma red alcance estos puntos finales sin autenticación. Home Assistant Supervisor 2026.03.02 aborda el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "home-assistant",
          "product": "Home Assistant Operating System",
          "versions": [
            {
              "version": "<= 17.1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "home-assistant",
          "product": "Home Assistant Supervisor",
          "versions": [
            {
              "version": "< 2026.03.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-03-31T00:00:00+00:00",
          "id": "CVE-2026-34205",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-923"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/home-assistant/core/security/advisories/GHSA-gh5m-4m97-c95h",
      "source": "[email protected]"
    }
  ]
}