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CVE-2023-6266

Estado: ModificadaAlta (7.5)—

The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This makes it possible for unauthenticated attackers to download back-up files which can contain sensitive information such as user passwords, PII, database credentials, and much more.

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)

Backupbliss — Backup Migration

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-6266",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-6266",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-01-11T20:00:16.014768Z"
        }
      }
    ],
    "cvssMetricV31": [
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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
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "inisev",
          "product": "BackupBliss – Backup & Migration with Free Cloud Storage",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
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            }
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          "defaultStatus": "unaffected"
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    }
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  "published": "2024-01-11T09:15:48.047",
  "references": [
    {
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      "tags": [
        "Issue Tracking"
      ],
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    },
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      "url": "https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L972",
      "tags": [
        "Issue Tracking"
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      "source": "security@wordfence.com"
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    {
      "url": "https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/initializer.php#L1065",
      "tags": [
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      ],
      "source": "security@wordfence.com"
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    {
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      "tags": [
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    {
      "url": "https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/initializer.php#L1065",
      "tags": [
        "Issue Tracking"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-552"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This makes it possible for unauthenticated attackers to download back-up files which can contain sensitive information such as user passwords, PII,  database credentials, and much more."
    },
    {
      "lang": "es",
      "value": "El complemento Backup Migration para WordPress es vulnerable al acceso no autorizado a los datos debido a una ruta y una validación de archivos insuficientes en el caso BMI_BACKUP de la función handle_downloading en todas las versiones hasta la 1.3.6 incluida. Esto hace posible que atacantes no autenticados descarguen archivos de respaldo que pueden contener información confidencial como contraseñas de usuario, PII, credenciales de bases de datos y mucho más."
    }
  ],
  "lastModified": "2026-06-17T06:50:25.370",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:backupbliss:backup_migration:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3F72CDE6-A671-447D-A924-84FE7D31C6DB",
              "versionEndIncluding": "1.3.6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@wordfence.com"
}