Database Backup for WordPress, CVE-2026-4030

CVE, Research URL: CVE-2026-4030
Home page URL: Security reports for Database Backup for WordPress
Application: Database Backup for WordPress
Published on: May 14, 2026
Research 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.
Affected versions: max 2.5.3.
Status: vulnerable