CyberRota Analysis
AI-GeneratedThe Newsletters plugin for WordPress is susceptible to an authorization bypass vulnerability that affects all versions up to 4.17, allowing authenticated users with author-level access or higher to send arbitrary newsletter emails to any WordPress role, including administrators. This flaw arises from inadequate verification of user permissions, which could lead to unauthorized mass-mailing and potential phishing attacks using the site's email system. WordPress site administrators and those using the Newsletters plugin should prioritize this vulnerability to mitigate risks associated with unauthorized email communications.
Original NVD Description
The Newsletters plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to send arbitrary newsletter emails to users of any WordPress role, including administrators, by forging POST fields during a normal post submission. This allows an attacker-supplied role slug via the newsletters_mailinglistsroles POST field to be passed directly to get_users(), enabling unauthorized mass-mailing and potential phishing against privileged site users through the site's own outbound email channel.