CVE-2026-4030 (GCVE-0-2026-4030)

Vulnerability from cvelistv5 – Published: 2026-05-14 12:32 – Updated: 2026-05-14 18:30
VLAI
Title
Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
Summary
The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
wpengine Database Backup for WordPress Affected: 0 , ≤ 2.5.2 (semver)
Create a notification for this product.
Credits
Drew Webber
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-4030",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-14T18:30:06.487780Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-14T18:30:42.046Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Database Backup for WordPress",
          "vendor": "wpengine",
          "versions": [
            {
              "lessThanOrEqual": "2.5.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Drew Webber"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-14T12:32:04.381Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L1623"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L157"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1632"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3510595/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-13T00:00:00.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Database Backup for WordPress \u003c= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-4030",
    "datePublished": "2026-05-14T12:32:04.381Z",
    "dateReserved": "2026-03-12T00:12:10.495Z",
    "dateUpdated": "2026-05-14T18:30:42.046Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-4030",
      "date": "2026-06-01",
      "epss": "0.0019",
      "percentile": "0.40659"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-4030\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-05-14T13:16:20.767\",\"lastModified\":\"2026-05-14T14:28:41.283\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L1623\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L157\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1632\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/changeset/3510595/\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve\",\"source\":\"security@wordfence.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-4030\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-14T18:30:06.487780Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-14T18:30:25.493Z\"}}], \"cna\": {\"title\": \"Database Backup for WordPress \u003c= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Drew Webber\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.1, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H\"}}], \"affected\": [{\"vendor\": \"wpengine\", \"product\": \"Database Backup for WordPress\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2.5.2\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-13T00:00:00.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L1623\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L157\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1632\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121\"}, {\"url\": \"https://plugins.trac.wordpress.org/changeset/3510595/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862 Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2026-05-14T12:32:04.381Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-4030\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-14T18:30:42.046Z\", \"dateReserved\": \"2026-03-12T00:12:10.495Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2026-05-14T12:32:04.381Z\", \"assignerShortName\": \"Wordfence\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.