Database Backup for WordPress Plugin <= 2.5.2

CVE-2026-4031 is an authorization bypass vulnerability in the Database Backup for WordPress plugin (<= 2.5.2) that allows unauthenticated attackers to intercept database backup files by manipulating the backup directory via the wp_db_temp_dir parameter, leading to sensitive information exposure.

The Database Backup for WordPress plugin before 2.5.3 is vulnerable to unauthenticated arbitrary file read and deletion due to improper authorization checks and user-controlled backup directories, leading to sensitive information exposure and potential site takeover on WordPress Multisite environments.

The Database Backup for WordPress plugin up to version 2.5.2 is vulnerable to unauthorized database export due to improper authorization enforcement, allowing unauthenticated attackers to export database tables in WordPress Multisite environments.