CVE-2025-8871

{
  "id": "CVE-2025-8871",
  "sourceIdentifier": "[email protected]",
  "published": "2025-11-05T03:15:42.880",
  "lastModified": "2026-10-18T21:10:00.120",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Everest Forms (Pro) plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.9.7 via deserialization of untrusted input in the mime_content_type() function. This makes it possible for unauthenticated attackers to inject a PHP Object. This vulnerability may be exploited by unauthenticated attackers when a form is present on the site with a non-required signature form field along with an image upload field. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. This vulnerability is only exploitable in PHP versions prior to 8."
    },
    {
      "lang": "es",
      "value": "El plugin Everest Forms (Pro) para WordPress es vulnerable a la inyección de objetos PHP en todas las versiones hasta la 1.9.7, inclusive, a través de la deserialización de entrada no confiable en la función mime_content_type(). Esto hace posible que atacantes no autenticados inyecten un objeto PHP. Esta vulnerabilidad puede ser explotada por atacantes no autenticados cuando un formulario está presente en el sitio con un campo de formulario de firma no requerido junto con un campo de carga de imagen. No hay una cadena POP conocida presente en el software vulnerable, lo que significa que esta vulnerabilidad no tiene impacto a menos que otro plugin o tema que contenga una cadena POP esté instalado en el sitio. Si una cadena POP está presente a través de un plugin o tema adicional instalado en el sistema objetivo, puede permitir al atacante realizar acciones como eliminar archivos arbitrarios, recuperar datos sensibles o ejecutar código, dependiendo de la cadena POP presente. Esta vulnerabilidad solo es explotable en versiones anteriores a PHP 8."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "WPEverest",
          "product": "Everest Forms Pro",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "1.9.7",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "baseScore": 5.6,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-11-05T18:56:13.108867Z",
          "id": "CVE-2025-8871",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://everestforms.net/changelog/",
      "source": "[email protected]"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/11d45287-f875-4cc9-aaf6-47158fe32858?source=cve",
      "source": "[email protected]"
    }
  ]
}