The Coming soon and Maintenance mode WordPress plugin before 3.5.3 does not properly sanitize inputs submitted by authenticated users when setting adding or modifying coming soon or maintenance mode pages, leading to stored XSS.

The Coming soon and Maintenance mode WordPress plugin before 3.6.8 does not have CSRF check in its comingsoonsendmail AJAX action, allowing attackers to make logged in admin to send arbitrary emails to all subscribed users via a CSRF attack

The Coming soon and Maintenance mode WordPress plugin before 3.5.3 does not have authorisation and CSRF checks in its comingsoonsendmail AJAX action, allowing any authenticated users, with a role as low as subscriber to send arbitrary emails to all subscribed users

Authentication Bypass by Spoofing vulnerability in wpdevart Coming soon and Maintenance mode allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Coming soon and Maintenance mode: from n/a through 3.7.3.