Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion

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Summary

CVECVE-2026-4030
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-14 13:16:20 UTC
Updated2026-05-14 14:28:41 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001900000 probability, percentile 0.405260000 (date 2026-05-25)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpengine Database Backup For WordPress affected 2.5.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset/3510595 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c83... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Drew Webber (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-13T00:00:00.000ZDisclosed
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