CVE-2026-18437: Mailerpress – Newsletter, Email Marketing & Ai Automation

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The MailerPress – Newsletter, email marketing & AI automation plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the `mailerpress/v1/contact` endpoint in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to update contact details.

Affected products

• Mailerpress Mailerpress – Newsletter, Email Marketing & Ai Automation: up to and including 1.5.0

Published 2026-07-31. Last modified 2026-08-12.