nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-4030 CVE-2026-4030
HIGH
Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
Record summary
CVE-2026-4030 has a selected CVSS score of 8.1 (high).
Description
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactTotal
CISA Coordinator · SSVC 2.0.3 · Evaluated May 14, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Database Backup for WordPressBrowse wpengine / Database Backup for WordPressDefault status: unaffected | CVE List | Through 2.5.2 | affected |
References
5plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3510595 wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve