CVE-2021-33490: Open-Xchange Ox App Suite

Medium severity, CVSS 6.1. EPSS: 1.3% chance of exploitation in the next 30 days.

OX App Suite through 7.10.5 allows XSS via a crafted snippet in a shared mail signature.

Affected products

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

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