CVE-2023-48115: SmarterTools SmarterMail

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

SmarterTools SmarterMail 8495 through 8664 before 8747 allows stored DOM XSS because an XSS protection mechanism is skipped when messageHTML and messagePlainText are set in the same request.

Affected products

• SmarterTools SmarterMail: from 16.0.8495, before 16.0.8747 (fixed in 16.0.8747)

Published 2023-12-21. Last modified 2026-06-17.