The Email Verification, Email OTP, Block Spam Email, Passwordless login, Hide Login, Magic Login – User Verification plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 2.0.39. This is due to the plugin not properly validating that an OTP was generated before comparing it to user input in the user_verification_form_wrap_process_otpLogin function. This makes it possible for unauthenticated attackers to log in as any user with a verified email address, such as an administrator, by submitting an empty OTP value.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.