CVE-2021-38377: Open-Xchange Ox App Suite

Medium severity, CVSS 6.1. EPSS: 1.2% chance of exploitation in the next 30 days.

OX App Suite through 7.10.5 allows XSS via JavaScript code in an anchor HTML comment within truncated e-mail, because there is a predictable UUID with HTML transformation results.

Affected products

• Open-Xchange Ox App Suite: up to and including 7.10.5

Published 2021-11-22. Last modified 2026-06-17.