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CVE-2020-27387

Estado: ModificadaAlta (8.8)—💥 Exploit

An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/<php_file_name>. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Horizontcms Project — Horizontcms

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-27387",
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          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
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        "impactScore": 6.4,
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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      "description": [
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          "value": "CWE-434"
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      "value": "An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/<php_file_name>. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta."
    },
    {
      "lang": "es",
      "value": "Un problema de carga de archivos sin restricciones en HorizontCMS versiones hasta 1.0.0-beta, permite a un atacante remoto autenticado (con acceso a FileManager) cargar y ejecutar código PHP arbitrario al cargar una carga útil PHP y luego usar la función rename de FileManager para proporcionar la carga útil (que recibirá un nombre aleatorio en el servidor) con la extensión PHP, y finalmente ejecutando el archivo PHP por medio de una petición HTTP GET en /storage/(php_file_name).&#xa0;NOTA: el proveedor ha parcheado esto dejando el número de versión en 1.0.0-beta"
    }
  ],
  "lastModified": "2026-06-17T03:09:12.247",
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