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CVE-2026-23745

Estado: ModificadaAlta (8.2)—

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Requiere interacción del usuario (UI:A) para abrir un archivo tar malicioso. El atacante sobrescribe archivos arbitrarios (hardlinks/symlinks) y puede leer datos fuera del directorio de extracción.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict File and Directory PermissionsRemote Data StorageEncrypt Sensitive InformationApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Isaacs — TAR

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2026-01-16T22:16:26.830",
  "references": [
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      "url": "https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e",
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          "value": "CWE-22"
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      "value": "node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3."
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      "value": "node-tar es un Tar para Node.js. La biblioteca node-tar (&lt;= 7.5.2) no sanea la ruta de enlace de las entradas Link (enlace duro) y SymbolicLink cuando preservePaths es falso (el comportamiento seguro predeterminado). Esto permite a archivos maliciosos eludir la restricción de la raíz de extracción, lo que lleva a la Sobrescritura Arbitraria de Archivos mediante enlaces duros y al Envenenamiento de Symlink mediante destinos de symlink absolutos. Esta vulnerabilidad está corregida en 7.5.3."
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  "lastModified": "2026-09-07T13:18:15.473",
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