FKIE_CVE-2026-8382

Vulnerability from fkie_nvd - Published: 2026-05-31 04:16 - Updated: 2026-07-22 07:10
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
The Advanced Custom Fields (ACF®) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.8.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the post_title and post_content of any post bound to a publicly accessible acf_form() instance by injecting values into the _post_title and _post_content parameters of a form submission request.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.8.0/includes/forms/form-front.php#L243
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset/3549586/advanced-custom-fields/trunk/includes/forms/form-front.php
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/ddb2290d-d4bd-4f70-9fe9-927f49721811?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Advanced Custom Fields (ACF\u00ae)",
          "vendor": "wpengine",
          "versions": [
            {
              "lessThanOrEqual": "6.8.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Advanced Custom Fields (ACF\u00ae) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.8.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the post_title and post_content of any post bound to a publicly accessible acf_form() instance by injecting values into the _post_title and _post_content parameters of a form submission request."
    },
    {
      "lang": "es",
      "value": "El plugin Advanced Custom Fields (ACF\u00ae) para WordPress es vulnerable a un bypass de autorizaci\u00f3n en todas las versiones hasta la 6.8.1, inclusive. Esto se debe a que el plugin no verifica correctamente que un usuario est\u00e1 autorizado para realizar una acci\u00f3n. Esto hace posible que atacantes no autenticados sobrescriban el post_title y el post_content de cualquier publicaci\u00f3n vinculada a una instancia de acf_form() accesible p\u00fablicamente inyectando valores en los par\u00e1metros _post_title y _post_content de una solicitud de env\u00edo de formulario."
    }
  ],
  "id": "CVE-2026-8382",
  "lastModified": "2026-07-22T07:10:00.107",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8382",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-01T10:32:13.854562Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-31T04:16:19.880",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.8.0/includes/forms/form-front.php#L243"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset/3549586/advanced-custom-fields/trunk/includes/forms/form-front.php"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ddb2290d-d4bd-4f70-9fe9-927f49721811?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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