CVE-2026-4030

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3e21b550-e1c5-4e23-9999-16c837353da9?source=cve

https://plugins.trac.wordpress.org/changeset/3510595/

https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L1632

https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L157

https://plugins.trac.wordpress.org/browser/wp-db-backup/trunk/wp-db-backup.php#L121

https://plugins.trac.wordpress.org/browser/wp-db-backup/tags/2.5.2/wp-db-backup.php#L1623

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS