CVE-2026-1303

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Feb 14, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2026-1303: Medium severity, CVSS 5.3 | Vulnix