The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The SchedulePress – Auto Post & Publish, Auto Social Share, Schedule Posts with Editorial Calendar & Missed Schedule Post Publisher plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 5.1.3. This is due the plugin utilizing the wpdeveloper library and leaving the demo files in place with display_errors on. This makes it possible for unauthenticated attackers to retrieve the full path of the web application, which can be used to aid other attacks. The information displayed is not useful on its own, and requires another vulnerability to be present for damage to an affected website.

Authorization Bypass Through User-Controlled Key vulnerability in MarketingFire Editorial Calendar.This issue affects Editorial Calendar: from n/a through 3.7.12.

The Editorial Calendar WordPress plugin before 3.8.3 does not sanitise and escape its settings, allowing users with roles as low as contributor to inject arbitrary web scripts in the plugin admin panel, enabling a Stored Cross-Site Scripting vulnerability targeting higher privileged users.

A vulnerability was found in Editorial Calendar Plugin up to 2.6 on WordPress. It has been declared as critical. Affected by this vulnerability is the function edcal_filter_where of the file edcal.php. The manipulation of the argument edcal_startDate/edcal_endDate leads to sql injection. The attack can be launched remotely. Upgrading to version 2.7 is able to address this issue. The patch is named a9277f13781187daee760b4dfd052b1b68e101cc. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-225151.