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CVE-2019-9842

Estado: ModificadaAlta (7.2)—

madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.

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).

Tecnologías afectadas (1)

Miniblog Project — Miniblog

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-9842",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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  "affected": [
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  "published": "2019-06-14T20:29:00.353",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-434"
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      "value": "madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension."
    },
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      "lang": "es",
      "value": "Madskristensen MiniBlog hasta 18-05-2018 permite a los atacantes remotos ejecutar un código ASPX arbitrario por medio de un elemento IMG con un de dato: URL, porque la función SaveFilesToDisk en el archivo app_code/handlers/PostHandler.cs escribe una cadena de base64 descodificada en un archivo sin comprobar la extensión."
    }
  ],
  "lastModified": "2026-06-17T02:44:42.120",
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