SMTP2GO for WordPress <= 1.16.0 - Missing Authorization to Authenticated (Subscriber+) Log Read/Truncate

Summary

The SMTP2GO for WordPress – Email Made Easy plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 1.16.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to truncate all SMTP2GO log records from the database or download a CSV export of all SMTP log data including recipient addresses, sender addresses, message subjects, and API response data.

Timeline

1. May 28, 2026, 6:45 AM UTCCVE published
2. May 28, 2026, 10:27 AM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. May 28, 2026, 10:34 AM UTCRecord last updated

Affected versions

• smtp2go SMTP2GO for WordPress – Email Made Easy

  through 1.16.0

References 11