Server-Side Request Forgery (SSRF) vulnerability in NiteoThemes CMP – Coming Soon & Maintenance.This issue affects CMP – Coming Soon & Maintenance: from n/a through 4.1.10.

The CMP – Coming Soon & Maintenance plugin for WordPress is vulnerable to Maintenance Mode Bypass in versions up to, and including, 4.1.7. A correct cmp_bypass GET parameter in the URL (equal to the md5-hashed home_url in the default setting) allows users to visit a site placed in maintenance mode thus bypassing the plugin's provided feature.

The CMP for WordPress is vulnerable to authorization bypass due to a missing capability check on the cmp_get_post_detail(), niteo_export_csv(), and cmp_disable_comingsoon_ajax() functions in versions up to, and including, 3.8.1. This makes it possible for unauthenticated attackers to read posts, export subscriber lists, and/or deactivate the plugin.

The CMP – Coming Soon & Maintenance plugin for WordPress is vulnerable to Information Exposure in versions up to, and including, 4.1.6 via the cmp_get_post_detail function. This can allow unauthenticated individuals to obtain the contents of any non-password-protected, published post or page even when maintenance mode is enabled.

The CMP WordPress plugin before 4.0.19 allows any user, even not logged in, to arbitrarily change the coming soon page layout.