The DIGITS: WordPress Mobile Number Signup and Login WordPress plugin before 8.4.6.1 does not rate limit OTP validation attempts, making it straightforward for attackers to bruteforce them.
The Digits plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 8.4.1. This is due to missing nonce validation in the 'digits_save_settings' function. This makes it possible for unauthenticated attackers to modify the default role of registered users to elevate user privileges via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.