FKIE_CVE-2026-26960

Vulnerability from fkie_nvd - Published: 2026-02-20 02:16 - Updated: 2026-06-17 10:26
Severity
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Summary
node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.
References
security-advisories@github.comhttps://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384Patch
security-advisories@github.comhttps://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499fPatch
security-advisories@github.comhttps://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cxExploit, Vendor Advisory
Impacted products
Vendor Product Version
isaacs tar *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "node-tar",
          "vendor": "isaacs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.5.8"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "709C920B-A33B-4301-AC36-EF3065986019",
              "versionEndExcluding": "7.5.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8."
    },
    {
      "lang": "es",
      "value": "node-tar es un Tar con todas las funciones para Node.js. Al usar las opciones predeterminadas en las versiones 7.5.7 e inferiores, un archivo controlado por el atacante puede crear un enlace duro dentro del directorio de extracci\u00f3n que apunte a un archivo fuera de la ra\u00edz de extracci\u00f3n, permitiendo la lectura y escritura arbitraria de archivos como el usuario extractor. La gravedad es alta porque la primitiva elude las protecciones de ruta y convierte la extracci\u00f3n del archivo en una primitiva de acceso directo al sistema de archivos. Este problema ha sido solucionado en la versi\u00f3n 7.5.8."
    }
  ],
  "id": "CVE-2026-26960",
  "lastModified": "2026-06-17T10:26:27.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-26960",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-20T15:29:17.653825Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-20T02:16:53.883",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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