FKIE_CVE-2026-2301

Vulnerability from fkie_nvd - Published: 2026-02-25 10:16 - Updated: 2026-04-15 00:35
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
The Post Duplicator plugin for WordPress is vulnerable to unauthorized arbitrary protected post meta insertion in all versions up to, and including, 3.0.8. This is due to the `duplicate_post()` function in `includes/api.php` using `$wpdb->insert()` directly to the `wp_postmeta` table instead of WordPress's standard `add_post_meta()` function, which would call `is_protected_meta()` to prevent lower-privileged users from setting protected meta keys (those starting with `_`). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary protected post meta keys such as `_wp_page_template`, `_wp_attached_file`, and other sensitive meta keys on duplicated posts via the `customMetaData` JSON array parameter in the `/wp-json/post-duplicator/v1/duplicate-post` REST API endpoint.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/post-duplicator/tags/3.0.6/includes/api.php#L843
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/post-duplicator/tags/3.0.6/includes/api.php#L923
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3463768%40post-duplicator%2Ftrunk&old=3459096%40post-duplicator%2Ftrunk&sfp_email=&sfph_mail=
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/e5c86f72-934c-4f3b-ab2a-65df1490ca8a?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Post Duplicator plugin for WordPress is vulnerable to unauthorized arbitrary protected post meta insertion in all versions up to, and including, 3.0.8. This is due to the `duplicate_post()` function in `includes/api.php` using `$wpdb-\u003einsert()` directly to the `wp_postmeta` table instead of WordPress\u0027s standard `add_post_meta()` function, which would call `is_protected_meta()` to prevent lower-privileged users from setting protected meta keys (those starting with `_`). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary protected post meta keys such as `_wp_page_template`, `_wp_attached_file`, and other sensitive meta keys on duplicated posts via the `customMetaData` JSON array parameter in the `/wp-json/post-duplicator/v1/duplicate-post` REST API endpoint."
    },
    {
      "lang": "es",
      "value": "El plugin Post Duplicator para WordPress es vulnerable a la inserci\u00f3n no autorizada de metadatos de publicaci\u00f3n protegidos arbitrarios en todas las versiones hasta la 3.0.8, inclusive. Esto se debe a que la funci\u00f3n `duplicate_post()` en `includes/api.php` utiliza `$wpdb-\u0026gt;insert()` directamente en la tabla `wp_postmeta` en lugar de la funci\u00f3n est\u00e1ndar de WordPress `add_post_meta()`, la cual llamar\u00eda a `is_protected_meta()` para evitar que usuarios con privilegios inferiores establezcan claves de metadatos protegidas (aquellas que comienzan con `_`). Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador o superior, inyecten claves de metadatos de publicaci\u00f3n protegidas arbitrarias como `_wp_page_template`, `_wp_attached_file` y otras claves de metadatos sensibles en publicaciones duplicadas a trav\u00e9s del par\u00e1metro de array JSON `customMetaData` en el endpoint de la API REST `/wp-json/post-duplicator/v1/duplicate-post`."
    }
  ],
  "id": "CVE-2026-2301",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-25T10:16:18.307",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/post-duplicator/tags/3.0.6/includes/api.php#L843"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/post-duplicator/tags/3.0.6/includes/api.php#L923"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3463768%40post-duplicator%2Ftrunk\u0026old=3459096%40post-duplicator%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e5c86f72-934c-4f3b-ab2a-65df1490ca8a?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}


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