The WP 2FA with Telegram plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in versions up to, and including, 3.0. This is due to the two-factor code being stored in a cookie, which makes it possible to bypass two-factor authentication.
The product uses a protection mechanism that relies on the existence or values of a cookie, but it does not properly ensure that the cookie is valid for the associated user.
The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.