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OpenAdvisories
Medium · 4.0 CVE-2025-10735 EUVD-2025-31819GHSA-qxh8-5779-hg4r

Block For Mailchimp – Easy Mailchimp Form Integration <= 1.1.12 - Unauthenticated Blind Server-Side Request Forgery

Published Oct 1, 2025 · Updated Apr 8, 2026 · Assigned by Wordfence

Description

The Block For Mailchimp – Easy Mailchimp Form Integration plugin for WordPress is vulnerable to Blind Server-Side Request Forgery in all versions up to, and including, 1.1.12 via the mcbSubmit_Form_Data(). This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

Affected products

VendorProductAffectedFixed
bplugins Block for Mailchimp – Add Email Subscription Forms and Collect Leads ≤ 1.1.12 —

References