The advanced-customized-prompts WordPress plugin through 1.0.1 does not verify the password before issuing an authenticated session for a supplied email address in an unauthenticated action, allowing unauthenticated attackers to log in as any registered user, including administrators, or to create arbitrary new accounts.
https://wpscan.com/vulnerability/7c7ad196-dff3-485f-9a50-8705bd796fb3/