The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the ‘hash’ parameter in all versions up to, and including, 5.7.20 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
The Icegram Express WordPress plugin before 5.5.1 does not properly sanitise and escape a parameter before using it in a SQL statement, leading to a SQL injection exploitable by any authenticated users, such as subscriber
The Email Subscribers & Newsletters WordPress plugin before 5.3.2 does not correctly escape the `order` and `orderby` parameters to the `ajax_fetch_report_list` action, making it vulnerable to blind SQL injection attacks by users with roles as low as Subscriber. Further, it does not have any CSRF protection in place for the action, allowing an attacker to trick any logged in user to perform the action by clicking a link.
Missing Authentication for Critical Function in Icegram Email Subscribers & Newsletters Plugin for WordPress prior to version 4.5.6 allows a remote, unauthenticated attacker to conduct unauthenticated email forgery/spoofing.
There was a flaw in the WordPress plugin, Email Subscribers & Newsletters before 4.3.1, that allowed SQL statements to be passed to the database in the hash parameter (a blind SQL injection vulnerability).
The WordPress plugin, Email Subscribers & Newsletters, before 4.2.3 had a privilege bypass flaw that allowed authenticated users (Subscriber or greater access) to send test emails from the administrative dashboard on behalf of an administrator. This occurs because the plugin registers a wp_ajax function to send_test_email.
The WordPress plugin, Email Subscribers & Newsletters, before 4.2.3 had a flaw that allowed for unauthenticated option creation. In order to exploit this vulnerability, an attacker would need to send a /wp-admin/admin-post.php?es_skip=1&option_name= request.
The WordPress plugin, Email Subscribers & Newsletters, before 4.2.3 had a flaw that allowed users with edit_post capabilities to manage plugin settings and email campaigns.
The WordPress plugin, Email Subscribers & Newsletters, before 4.2.3 had a flaw that allowed unauthenticated file download with user information disclosure.