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.
References (4)
Core 4
Core References
Scores
CVSS v3
4.0
EPSS
0.0028
EPSS Percentile
19.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (2)
bplugins/Block for Mailchimp – Add Email Subscription Forms and Collect Leads
< 1.1.12
bplugins/Block For Mailchimp – Easy Mailchimp Form Integration
< 1.1.12
Published
Oct 01, 2025
Tracked Since
Feb 18, 2026