Block For Mailchimp – Easy Mailchimp Form Integration: Server-side request forgery
Block For Mailchimp – Easy Mailchimp Form Integration is affected by server-side request forgery. The vulnerable path is reachable without authentication. The vulnerable server can be induced to make attacker-selected network requests.
- Component
- Block For Mailchimp – Easy Mailchimp Form Integration
- Plugin slug
block-for-mailchimp- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Oct 01, 2025
This CVE was published Oct 01, 2025 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
Update Block For Mailchimp – Easy Mailchimp Form Integration to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N