WP 2FA vulnerabilities

The WP 2FA WordPress plugin before 4.1.0 does not invalidate a time-based one-time passcode once it has been used, allowing an attacker who knows an account's password and has observed a valid code within its validity window to replay it and bypass two-factor authentication, including on administrator accounts.

The WP 2FA WordPress plugin before 4.1.0 does not validate the second authentication factor when one of its supported methods is selected at login, allowing an attacker who already knows a user's password to bypass two-factor authentication and fully access the account, including administrator accounts.

The WP 2FA WordPress plugin before version 3.1.1.2 does not verify that the email address provided during two-factor authentication setup belongs to the user. This allows an attacker who has obtained a user's credentials to redirect the setup verification code to an attacker-controlled email address and take over the account.