The WP Database Backup – Unlimited Database & Files Backup by Backup for WP plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 7.3 via publicly accessible back-up files. This makes it possible for unauthenticated attackers to extract sensitive data including all information stored in the database.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The WP Database Backup WordPress plugin before 5.9 does not escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks when the unfiltered_html capability is disallowed (for example in multisite setup)

The WP Database Backup plugin through 5.5 for WordPress stores downloads by default locally in the directory wp-content/uploads/db-backup/. This might allow attackers to read ZIP archives by guessing random ID numbers, guessing date strings with a 2020_{0..1}{0..2}_{0..3}{0..9} format, guessing UNIX timestamps, and making HTTPS requests with the complete guessed URL.

The wp-database-backup plugin before 4.3.1 for WordPress has XSS.

The wp-database-backup plugin before 4.3.3 for WordPress has CSRF.

The wp-database-backup plugin before 4.3.1 for WordPress has CSRF.

The wp-database-backup plugin before 5.1.2 for WordPress has XSS.

The wp-database-backup plugin before 4.3.3 for WordPress has XSS.