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CVE-2020-15249

Estado: ModificadaMedia (5.4)—

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files.

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Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) & v1.1.0.

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)

Octobercms — October

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-15249",
  "cveTags": [],
  "metrics": {
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
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      "lang": "en",
      "value": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) & v1.1.0."
    },
    {
      "lang": "es",
      "value": "October es una plataforma CMS gratuita, de código abierto y autohosteada basada en Laravel PHP Framework.&#xa0;En October CMS desde la versión 1.0.319 y anterior a versión 1.0.469, a los usuarios de backend con acceso para cargar archivos se les permitió cargar archivos SVG sin ningún saneamiento aplicado a los archivos cargados.&#xa0;Dado que los archivos SVG admiten ser analizados como HTML por los navegadores, esto significa que teóricamente podrían cargar Javascript que se ejecutaría en una ruta bajo el dominio del sitio web (es decir, /storage/app/media/evil.svg), pero tendrían que convencer su objetivo para que visite esa ubicación directamente en el navegador del objetivo, ya que el backend no muestra SVG en línea en ningún lugar, los SVG solo se muestran como recursos de imagen en el backend y, por lo tanto, no se pueden ejecutar.&#xa0;El problema se ha corregido en Build 469 (versión v1.0.469) y versión v1.1.0"
    }
  ],
  "lastModified": "2026-06-17T02:56:21.413",
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    {
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