CVE-2021-31739: Seppmail

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The SEPPmail solution is vulnerable to a Cross-Site Scripting vulnerability (XSS), because user input is not correctly encoded in HTML attributes when returned by the server.SEPPmail 11.1.10 allows XSS via a recipient address.

Affected products

• Seppmail Seppmail: version 11.1.10 only

Published 2022-11-18. Last modified 2026-06-17.