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CVE-2026-118167VulnerabilityPublished

The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form

Source GCVE Database

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Authoritative record:CVE-2026-118167· Medium

Not known to be exploited : upgrade to 4.15.0 when convenient.

Data as of 6 Nov 2026, 07:20 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 4.15.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade MC4WP: Mailchimp for WordPress to 4.15.0.

Affected software

ProductAffectedFixed in
MC4WP: Mailchimp for WordPressAffected
  • <4.15.0
Fixed in
  • 4.15.0

AI-suggested

Upgrade the MC4WP: Mailchimp for WordPress plugin to version 4.15.0 or later, where this validation issue has been fixed. No other mitigation steps are indicated in the provided data.

Description

The MC4WP: Mailchimp for WordPress plugin versions before 4.15.0 contain a vulnerability where the plugin 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. This flaw allows unauthenticated visitors to subscribe arbitrary email addresses to any audience within the site's connected Mailchimp account.

References

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