CVE-2026-105055: Wp Mailster

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in WP Mailster WP Mailster wp-mailster allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Mailster: from n/a through 1.9.0.0.

Affected products

• Wp Mailster Wp Mailster: up to and including 1.9.0.0

Published 2026-10-05. Last modified 2026-10-06.