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CVE-2021-20865

Estado: ModificadaAlta (7.5)—

Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability in browsing database which may allow a user to browse unauthorized data via unspecified vectors.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Advancedcustomfields — Advanced Custom Fields

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-20865",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "Delicious Brains",
          "product": "Advanced Custom Fields and Advanced Custom Fields Pro",
          "versions": [
            {
              "status": "affected",
              "version": "versions prior to 5.11"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-13T07:15:06.793",
  "references": [
    {
      "url": "https://jvn.jp/en/jp/JVN09136401/index.html",
      "tags": [
        "Third Party Advisory"
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      "source": "vultures@jpcert.or.jp"
    },
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      "url": "https://wordpress.org/plugins/advanced-custom-fields/",
      "tags": [
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    },
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      "url": "https://www.advancedcustomfields.com/",
      "tags": [
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      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN09136401/index.html",
      "tags": [
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    },
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      "url": "https://wordpress.org/plugins/advanced-custom-fields/",
      "tags": [
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.advancedcustomfields.com/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability in browsing database which may allow a user to browse unauthorized data via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Advanced Custom Fields versiones anteriores a 5.11 y Advanced Custom Fields Pro versiones anteriores a 5.11, contienen una vulnerabilidad de falta de autorización en la navegación de la base de datos que puede permitir a un usuario navegar por datos no autorizados por medio de vectores no especificados"
    }
  ],
  "lastModified": "2026-06-17T03:34:34.020",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
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  ],
  "sourceIdentifier": "vultures@jpcert.or.jp"
}