CVE-2026-118167: MC4WP: Mailchimp for WordPress · Incorrect Authorization
Affects MC4WP: Mailchimp for WordPressSource CVE Database V5
Not known to be exploited : upgrade to 4.15.0 when convenient.
Data as of 6 Nov 2026, 06:32 UTC
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
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| MC4WP: Mailchimp for WordPress | Affected
| Fixed in
|
AI-suggested
Upgrade the MC4WP: Mailchimp for WordPress plugin to version 4.15.0 or later, where this authorization flaw has been fixed.
Description
MC4WP: Mailchimp for WordPress plugin versions before 4.15.0 contain an authorization flaw that allows unauthenticated visitors to subscribe arbitrary email addresses to any Mailchimp audience configured in the site owner's account. This occurs because the plugin does not validate that the audience targeted by a sign-up form or integration matches the audience configured by the site owner.