The Crypto plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.15. This is due to missing nonce validation in the 'crypto_connect_ajax_process::check' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Crypto plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.18. This is due to a limited arbitrary method call to 'crypto_connect_ajax_process::log_in' function in the 'crypto_connect_ajax_process' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the username.

The Crypto plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.19. This is due to missing validation on the user being supplied in the 'crypto_connect_ajax_process::register' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the username.

The User Post Gallery WordPress plugin through 2.19 does not limit what callback functions can be called by users, making it possible to any visitors to run code on sites running it.

The Flexi WordPress plugin before 4.20 does not sanitise and escape various parameters before outputting them back in some pages such as the user dashboard, leading to a Reflected Cross-Site Scripting