FKIE_CVE-2026-4001

Vulnerability from fkie_nvd - Published: 2026-03-24 00:16 - Updated: 2026-04-24 16:32
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
The Woocommerce Custom Product Addons Pro plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 5.4.1 via the custom pricing formula eval() in the process_custom_formula() function within includes/process/price.php. This is due to insufficient sanitization and validation of user-submitted field values before passing them to PHP's eval() function. The sanitize_values() method strips HTML tags but does not escape single quotes or prevent PHP code injection. This makes it possible for unauthenticated attackers to execute arbitrary code on the server by submitting a crafted value to a WCPA text field configured with custom pricing formula (pricingType: "custom" with {this.value}).
References
security@wordfence.comhttps://acowebs.com/woo-custom-product-addons/
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/70a2b6ff-defc-4722-9af9-3cae94e98632?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Woocommerce Custom Product Addons Pro plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 5.4.1 via the custom pricing formula eval() in the process_custom_formula() function within includes/process/price.php. This is due to insufficient sanitization and validation of user-submitted field values before passing them to PHP\u0027s eval() function. The sanitize_values() method strips HTML tags but does not escape single quotes or prevent PHP code injection. This makes it possible for unauthenticated attackers to execute arbitrary code on the server by submitting a crafted value to a WCPA text field configured with custom pricing formula (pricingType: \"custom\" with {this.value})."
    },
    {
      "lang": "es",
      "value": "El plugin Woocommerce Custom Product Addons Pro para WordPress es vulnerable a ejecuci\u00f3n remota de c\u00f3digo en todas las versiones hasta la 5.4.1, inclusive, a trav\u00e9s de la f\u00f3rmula de precios personalizada eval() en la funci\u00f3n process_custom_formula() dentro de includes/process/price.php. Esto se debe a una sanitizaci\u00f3n y validaci\u00f3n insuficientes de los valores de campo enviados por el usuario antes de pasarlos a la funci\u00f3n eval() de PHP. El m\u00e9todo sanitize_values() elimina las etiquetas HTML pero no escapa las comillas simples ni previene la inyecci\u00f3n de c\u00f3digo PHP. Esto hace posible que atacantes no autenticados ejecuten c\u00f3digo arbitrario en el servidor al enviar un valor manipulado a un campo de texto de WCPA configurado con una f\u00f3rmula de precios personalizada (pricingType: \u0027custom\u0027 con {this.value})."
    }
  ],
  "id": "CVE-2026-4001",
  "lastModified": "2026-04-24T16:32:53.997",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-24T00:16:31.040",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://acowebs.com/woo-custom-product-addons/"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/70a2b6ff-defc-4722-9af9-3cae94e98632?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-95"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.