CVE-2023-5958: Wpexperts Post Smtp

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The POST SMTP Mailer WordPress plugin before 2.7.1 does not escape email message content before displaying it in the backend, allowing an unauthenticated attacker to perform XSS attacks against highly privileged users.

Affected products

• Wpexperts Post Smtp: before 2.7.1 (fixed in 2.7.1)

Published 2023-11-27. Last modified 2026-06-17.