CVE-2026-1303MailChimp Campaigns <= 3.2.4 - Missing Authorization to Authenticated (Subscriber+) MailChimp App Disconnection
Updated under an hour ago ()
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It affects matthieuscarset MailChimp Campaigns. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The MailChimp Campaigns plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.2.4. This is due to missing capability checks on the `mailchimp_campaigns_manager_disconnect_app` function that is hooked to the AJAX action of the same name. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disconnect the site from its MailChimp synchronization app, disrupting automated email campaigns and marketing integrations.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Apr 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
matthieuscarset MailChimp Campaigns matthieuscarset:mailchimp_campaigns (from the name) | through 3.2.4 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c2057ec2-9f03-4ae9-b200-aa5a318b461e?source=cve
- https://plugins.trac.wordpress.org/browser/olalaweb-mailchimp-campaign-manager/trunk/mailchimp-campaigns-manager.php#L636
- https://plugins.trac.wordpress.org/browser/olalaweb-mailchimp-campaign-manager/tags/3.2.4/mailchimp-campaigns-manager.php#L636
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.