CVE-2026-118167
MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Subscription Audience Override
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| MC4WP: Mailchimp for WordPress Unknown |
≥ 0; < 4.15.0 (affected, semver)
Other versions: unaffected |
CNA: WPScan |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
- https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1/
exploit · CNA: WPScan
References
- https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1/CNA: WPScan · exploit, vdb-entry, technical-description
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