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.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 06 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Fri, 06 Nov 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-863
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Fri, 06 Nov 2026 08:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Fri, 06 Nov 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Subscription Audience Override
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-11-06T11:59:40.340Z

Reserved: 2026-10-27T17:49:16.686Z

Link: CVE-2026-118167

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-06T06:16:40.710

Modified: 2026-11-06T20:09:13.780

Link: CVE-2026-118167

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T15:45:05Z

Weaknesses