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CVE-2024-6520

Estado: ModificadaMedia (4.8)—

The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom error message in all versions up to, and including, 5.1.19 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

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)

Fluentforms — Contact Form

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-6520",
  "cveTags": [],
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          "options": [
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          "timestamp": "2024-07-29T17:20:54.932520Z"
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          "userInteraction": "REQUIRED",
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  "published": "2024-07-27T12:15:11.030",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
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      "source": "security@wordfence.com",
      "description": [
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          "value": "CWE-79"
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom error message in all versions up to, and including, 5.1.19 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled."
    },
    {
      "lang": "es",
      "value": " El complemento Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder para WordPress es vulnerable a Cross Site Scripting almacenado en todas las versiones hasta la 5.1.19 incluida debido a una sanitización de entrada y un escape de salida insuficientes . Esto hace posible que atacantes autenticados, con acceso de nivel de administrador y superior, inyecten scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada."
    }
  ],
  "lastModified": "2026-06-17T08:18:10.407",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "5.1.20"
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          "operator": "OR"
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  "sourceIdentifier": "security@wordfence.com"
}