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.
Cross-site request forgery in Icegram Email Subscribers & Newsletters Plugin for WordPress v4.4.8 allows a remote attacker to send forged emails by tricking legitimate users into clicking a crafted link.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in Icegram Email Subscribers & Newsletters Plugin for WordPress v4.4.8 allows a remote, authenticated attacker to determine the value of database fields.
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.