Login With OTP < 1.5 - Authentication Bypass via Weak OTP

Description

The plugin is vulnerable to authentication bypass due to the plugin generating too weak OTP, and there’s no attempt or time limit. This makes it possible for unauthenticated attackers to generate and brute force the 6-digit numeric OTP that makes it possible to log in as any existing user on the site, such as an administrator, if they know the email address.