Block For Mailchimp WordPress Plugin Blind Server-Side Request Forgery Vulnerability

A Blind Server-Side Request Forgery (SSRF) vulnerability has been identified in the Block For Mailchimp – Easy Mailchimp Form Integration plugin for WordPress, affecting all versions through 1.1.12. The vulnerability arises in the mcbSubmit_Form_Data() function, allowing unauthenticated attackers to make web requests to arbitrary locations from the web application. This could be exploited to query and modify information from internal services.

Impact

Exploitation of this vulnerability could lead to unauthorized web requests being made from the WordPress application to internal services, potentially allowing attackers to access or modify sensitive information.

Remediation

Users are advised to update the Block For Mailchimp WordPress plugin to version 1.1.13 or later.