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.
Published: 2026-11-06
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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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

Subscriptions

No data.

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 : Received

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

Modified: 2026-11-06T12:17:17.967

Link: CVE-2026-118167

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses