CVE-2026-3577

The Keep Backup Daily plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the backup title alias (val parameter) in the update_kbd_bkup_alias AJAX action in all versions up to, and including, 2.1.2. This is due to insufficient input sanitization and output escaping. While sanitize_text_field() strips HTML tags on save, it does not encode double quotes. The backup titles are output in HTML attribute contexts without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts via attribute injection that will execute whenever another administrator views the backup list page.

The Keep Backup Daily plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the backup title alias (val parameter) in the update_kbd_bkup_alias AJAX action in all versions up to, and including, 2.1.2. This is due to insufficient input sanitization and output escaping. While sanitize_text_field() strips HTML tags on save, it does not encode double quotes. The backup titles are output in HTML attribute contexts without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts via attribute injection that will execute whenever another administrator views the backup list page.

The Keep Backup Daily plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the backup title alias (val parameter) in the update_kbd_bkup_alias AJAX action in all versions up to, and including, 2.1.2. This is due to insufficient input sanitization and output escaping. While sanitize_text_field() strips HTML tags on save, it does not encode double quotes. The backup titles are output in HTML attribute contexts without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts via attribute injection that will execute whenever another administrator views the backup list page.

The Keep Backup Daily plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the backup title alias (val parameter) in the update_kbd_bkup_alias AJAX action in all versions up to, and including, 2.1.2. This is due to insufficient input sanitization and output escaping. While sanitize_text_field() strips HTML tags on save, it does not encode double quotes. The backup titles are output in HTML attribute contexts without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts via attribute injection that will execute whenever another administrator views the backup list page.