PT-2026-66739 · Mailerpress · Mailerpress – Newsletter

Jakub Lipiński · CVE-2026-18437 · Published 2026-07-31 · Updated 2026-07-31

NVD

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-18437

Affected Products

Mailerpress – Newsletter

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-18437 · Security Note
• https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Contacts.php#L801 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/159d031b-0362-4625-9d98-3908401c8ee8?source=cve · Note
• https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Contacts.php#L847 · Note