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CVE-2017-17672

Estado: ModificadaCrítica (9.8)—💥 Exploit

In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.

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)

Vbulletin — Vbulletin

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2017-17672",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "obtainAllPrivilege": false,
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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  "affected": [
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  "published": "2017-12-14T00:29:00.263",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-502"
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      "lang": "en",
      "value": "In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates."
    },
    {
      "lang": "es",
      "value": "En vBulletin hasta las versiones 5.3.x, hay una vulnerabilidad de deserialización no autenticada que conduce al borrado de archivos arbitrarios y, en ciertas circunstancias, la ejecución de código, debido al uso no seguro de unserialize() de PHP en la función cacheTemplates() de vB_Library_Template, que es una API expuesta públicamente expuesta. Esto se explota con el parámetro templateidlist en ajax/api/template/cacheTemplates."
    }
  ],
  "lastModified": "2026-06-17T01:11:28.480",
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