CVE-2026-19693

Estado: AplazadaAlta (8.1)—

extract-zip through 2.0.1 containment-checks only the parent directory of each archive entry and never the entry's own final path component, so an archive containing two entries with identical names - a symlink whose target is outside the destination, followed by a regular file - writes through the planted symlink and yields an arbitrary file write outside the destination directory.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.28%
Percentil entre todas las CVEs puntuadas: 19
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1203 Exploitation for Client Executionexecution85 %
Impacto principalT1565.001 Stored Data Manipulationimpact80 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation70 %

UI:R (interacción del usuario para extraer el archivo) indica T1203. El atacante escribe archivos arbitrarios fuera del destino (manipulación de datos); si sobrescribe binarios de sistema puede escalar privilegios.

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

Application Isolation and Sandboxing Exploit Protection Update Software Threat Intelligence Program Restrict File and Directory Permissions Remote Data Storage

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Max-mapper — Extract-zip^AI

CWE

CWE-22, CWE-59

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-19693",
  "cveTags": [
    {
      "tags": [
        "unsupported-when-assigned"
      ],
      "sourceIdentifier": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-19693",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-17T16:00:39.088818Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
      "affectedData": [
        {
          "repo": "https://github.com/max-mapper/extract-zip",
          "vendor": "max-mapper",
          "product": "extract-zip",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "2.0.1"
            }
          ],
          "platforms": [
            "Linux",
            "macOS"
          ],
          "packageURL": "pkg:npm/extract-zip",
          "packageName": "extract-zip",
          "collectionURL": "https://www.npmjs.com/package/extract-zip",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-17T14:20:20.737",
  "references": [
    {
      "url": "https://github.com/max-mapper/extract-zip",
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
    },
    {
      "url": "https://www.npmjs.com/package/extract-zip",
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "extract-zip through 2.0.1 containment-checks only the parent directory of each archive entry and never the entry's own final path component, so an archive containing two entries with identical names - a symlink whose target is outside the destination, followed by a regular file - writes through the planted symlink and yields an arbitrary file write outside the destination directory."
    }
  ],
  "lastModified": "2026-09-09T15:52:04.827",
  "sourceIdentifier": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
}