The miniOrange 2FA WordPress plugin before 6.2.6 does not validate the submitted one-time password against the targeted user's stored secret, instead verifying it against an attacker-supplied value, allowing an unauthenticated attacker who knows a victim's password to bypass two-factor authentication and gain access to the victim's account, including administrators.
https://wpscan.com/vulnerability/1994ce51-3534-4cb3-b424-d2f9014e8bb3/