FKIE_CVE-2026-1454

Vulnerability from fkie_nvd - Published: 2026-03-11 09:16 - Updated: 2026-03-11 13:52
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Summary
The Responsive Contact Form Builder & Lead Generation Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.0.1 via form field submissions. This is due to insufficient input sanitization in the lfb_lead_sanitize() function which omits certain field types from its sanitization whitelist, combined with an overly permissive wp_kses() filter at output time that allows onclick attributes on anchor tags. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator views the lead entries in the WordPress dashboard.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/ajax-functions.php#L587
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/show-lead.php#L13
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset/3462549/
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/f5863132-90a7-414f-abcb-e8b6a9d229c5?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Responsive Contact Form Builder \u0026 Lead Generation Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.0.1 via form field submissions. This is due to insufficient input sanitization in the lfb_lead_sanitize() function which omits certain field types from its sanitization whitelist, combined with an overly permissive wp_kses() filter at output time that allows onclick attributes on anchor tags. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator views the lead entries in the WordPress dashboard."
    },
    {
      "lang": "es",
      "value": "El plugin Responsive Contact Form Builder \u0026amp; Lead Generation Plugin para WordPress es vulnerable a cross-site scripting almacenado en todas las versiones hasta la versi\u00f3n 2.0.1, inclusive, a trav\u00e9s de env\u00edos de campos de formulario. Esto se debe a una sanitizaci\u00f3n de entrada insuficiente en la funci\u00f3n lfb_lead_sanitize() que omite ciertos tipos de campo de su lista blanca de sanitizaci\u00f3n, combinado con un filtro wp_kses() excesivamente permisivo en el momento de la salida que permite atributos onclick en las etiquetas de anclaje. Esto hace posible que atacantes no autenticados inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un administrador vea las entradas de leads en el panel de WordPress."
    }
  ],
  "id": "CVE-2026-1454",
  "lastModified": "2026-03-11T13:52:47.683",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "security@wordfence.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-11T09:16:12.647",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/ajax-functions.php#L587"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/show-lead.php#L13"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset/3462549/"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f5863132-90a7-414f-abcb-e8b6a9d229c5?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Primary"
    }
  ]
}


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