CVE-2025-22303: Wpmailster Wp Mailster

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Insertion of Sensitive Information Into Sent Data vulnerability in brandtoss WP Mailster wp-mailster allows Retrieve Embedded Sensitive Data.This issue affects WP Mailster: from n/a through <= 1.8.17.0.

Affected products

• Wpmailster Wp Mailster: before 1.8.18 (fixed in 1.8.18)

Published 2025-01-07. Last modified 2026-06-17.