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CVE-2026-26833

Estado: AnalizadaCrítica (9.8)—

thumbler through 1.1.2 allows OS command injection via the input, output, time, or size parameter in the thumbnail() function because user input is concatenated into a shell command string passed to child_process.exec() without proper sanitization or escaping.

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.

AV:N/PR:N/UI:N indica acceso remoto sin autenticación; inyección de comandos OS en parámetros web de la función thumbnail() sin sanitización, ejecutados vía child_process.exec().

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Mmahrous — Thumbler

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-26833",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-26833",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-28T01:15:11.452465Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "attackVector": "NETWORK",
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 3.9
      },
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        "type": "Secondary",
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  "affected": [
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  ],
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/mmahrous/thumbler/blob/master/lib/thumbler.js",
      "tags": [
        "Not Applicable"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/zebbernCVE/CVE-2026-26833",
      "tags": [
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        "Vendor Advisory"
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      "url": "https://www.npmjs.com/package/thumbler",
      "tags": [
        "Product"
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      "source": "cve@mitre.org"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-78"
        }
      ]
    },
    {
      "type": "Secondary",
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      "description": [
        {
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          "value": "CWE-94"
        }
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  ],
  "descriptions": [
    {
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      "value": "thumbler through 1.1.2 allows OS command injection via the input, output, time, or size parameter in the thumbnail() function because user input is concatenated into a shell command string passed to child_process.exec() without proper sanitization or escaping."
    },
    {
      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T10:26:21.793",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "030888A9-4BCE-4989-BFAF-19B03EC64507",
              "versionEndIncluding": "1.1.2"
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "cve@mitre.org"
}