CVE-2023-6875: Wpexperts Post Smtp

Critical severity, CVSS 9.8. EPSS: 90.3% chance of exploitation in the next 30 days.

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauthorized access of data and modification of data due to a type juggling issue on the connect-app REST endpoint in all versions up to, and including, 2.8.7. This makes it possible for unauthenticated attackers to reset the API key used to authenticate to the mailer and view logs, including password reset emails, allowing site takeover. CVE-2023-52233 appears to be a duplicate of this issue.

Affected products

• Wpexperts Post Smtp: up to and including 2.8.7

Published 2024-01-11. Last modified 2026-06-17.