What’s Vulnerable › Vulnerabilities

CVE-2025-10735: Block For Mailchimp – Easy Mailchimp Form Integration <= 1.1.12 - Unauthenticated Blind Server-Side Request Forgery

• Severity: medium (CVSS 4.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-01 · updated 2026-10-09
• Weakness: CWE-918

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

• bplugins Block for Mailchimp – Add Email Subscription Forms and Collect Leads: through 1.1.12

References

• https://plugins.svn.wordpress.org/block-for-mailchimp/tags/1.1.9/mailchimp/API.php
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3368808%40block-for-mailchimp&new=3368808%40block-for-mailchimp&sfp_email=&sfph_mail=
• https://wordpress.org/plugins/block-for-mailchimp/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/51de575f-d458-4a7d-bc57-4a11e5124377?source=cve

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