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CVE-2026-118167

MEDIUM 5.3 CVSS 3.1
Published
November 6, 2026
Last modified
November 6, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-863
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown MC4WP: Mailchimp for WordPress — Before 4.15.0

References

  • wpscan.com https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1/
  • nvd.nist.gov Official NVD record