CVE-2026-118167 Details
Description
The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.
A vulnerability exists in the MC4WP: Mailchimp for WordPress plugin in versions prior to 4.15.0. The plugin fails to validate that the Mailchimp audience associated with a sign-up form or bundled integration matches the audience set by the site owner. This flaw allows unauthenticated visitors to subscribe arbitrary email addresses to any audience within the site's connected Mailchimp account.
Users are advised to update the MC4WP: Mailchimp for WordPress plugin to version 4.15.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 6, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| MC4WP: Mailchimp for WordPress | < 4.15.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Nov 6, 2026 | New CVE Received | [email protected] |