{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Mailgun for WordPress",
          "vendor": "mailgun",
          "versions": [
            {
              "lessThanOrEqual": "2.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST[\u0027addresses\u0027], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site\u0027s API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover."
    },
    {
      "lang": "es",
      "value": "El plugin Mailgun para WordPress para WordPress es vulnerable a la falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) a trav\u00e9s de salto de ruta en versiones hasta la 2.2.0 inclusive. Esto se debe a una validaci\u00f3n de entrada insuficiente en la funci\u00f3n add_list(), que acepta claves de array controladas por el usuario desde par\u00e1metro , las pasa a trav\u00e9s de sanitize_text_field(). Esto hace posible que atacantes no autenticados realicen peticiones POST autenticadas a cualquier endpoint de la API de Mailgun utilizando la clave API del sitio de WordPress, incluyendo la creaci\u00f3n de rutas de reenv\u00edo de correo electr\u00f3nico entrantes que pueden interceptar correos electr\u00f3nicos de restablecimiento de contrase\u00f1a, lo que lleva a la toma de control de la cuenta de administrador."
    }
  ],
  "id": "CVE-2026-78003",
  "lastModified": "2026-10-12T16:10:00.220",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-78003",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-25T13:14:07.382843Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-22T09:16:53.543",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}