FKIE_CVE-2026-64824

Vulnerability from fkie_nvd - Published: 2026-07-21 16:17 - Updated: 2026-10-24 19:10
Severity
8.4 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
Summary
Home Assistant Core before 2026.7.0 contains a path traversal vulnerability in the backup-restore function that allows attackers to write files to arbitrary absolute filesystem paths by supplying a crafted tar archive with a SYMTYPE entry containing a benign member name paired with an absolute linkname pointing outside the extraction directory. Because the official Docker image runs the Home Assistant process as root and the subsequent regular-file entry is written through the unvalidated symlink, attackers can achieve remote code execution by overwriting auto-imported Python paths such as site-packages/sitecustomize.py or custom component directories.
References
disclosure@vulncheck.comhttps://github.com/home-assistant/core/commit/1e457600f1093c15e1325742d03e2b76498c79c1
disclosure@vulncheck.comhttps://github.com/home-assistant/core/pull/172252
disclosure@vulncheck.comhttps://github.com/home-assistant/core/releases/tag/2026.7.0
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/home-assistant-core-symlink-path-traversal-rce-via-backup-restore
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-78r8-wwqv-r299
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/home-assistant/core",
          "product": "Home Assistant Core",
          "repo": "https://github.com/home-assistant/core",
          "vendor": "home-assistant",
          "versions": [
            {
              "lessThan": "2026.7.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Home Assistant Core before 2026.7.0 contains a path traversal vulnerability in the backup-restore function that allows attackers to write files to arbitrary absolute filesystem paths by supplying a crafted tar archive with a SYMTYPE entry containing a benign member name paired with an absolute linkname pointing outside the extraction directory. Because the official Docker image runs the Home Assistant process as root and the subsequent regular-file entry is written through the unvalidated symlink, attackers can achieve remote code execution by overwriting auto-imported Python paths such as site-packages/sitecustomize.py or custom component directories."
    },
    {
      "lang": "es",
      "value": "Home Assistant Core anterior a 2026.7.0 contiene una vulnerabilidad de salto de ruta en la funci\u00f3n de copia de seguridad y restauraci\u00f3n que permite a los atacantes escribir archivos en rutas arbitrarias absolutas del sistema de archivos al proporcionar un archivo tar manipulado con una entrada SYMTYPE que contiene un nombre de miembro benigno emparejado con un linkname absoluto que apunta fuera del directorio de extracci\u00f3n. Debido a que la imagen oficial de Docker ejecuta el proceso de Home Assistant como root y la entrada de archivo regular subsiguiente se escribe a trav\u00e9s del symlink no validado, los atacantes pueden lograr la ejecuci\u00f3n remota de c\u00f3digo al sobrescribir rutas de Python autoimportadas como site-packages/sitecustomize.py o directorios de componentes personalizados."
    }
  ],
  "id": "CVE-2026-64824",
  "lastModified": "2026-10-24T19:10:00.127",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 6.0,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-64824",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-21T16:35:40.370650Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-21T16:17:21.433",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/home-assistant/core/commit/1e457600f1093c15e1325742d03e2b76498c79c1"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/home-assistant/core/pull/172252"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/home-assistant/core/releases/tag/2026.7.0"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/home-assistant-core-symlink-path-traversal-rce-via-backup-restore"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-78r8-wwqv-r299"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}



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