The LogDash Activity Log WordPress plugin before 1.1.4 hooks the wp_login_failed function (from src/Hooks/Users.php) in order to log failed login attempts to the database but it doesn't escape the username when it perform some SQL request leading to a SQL injection vulnerability which can be exploited using time-based technique by unauthenticated attacker
https://wpscan.com/vulnerability/b658e403-006c-4555-b1b2-3603e44f4411/