CVE-2020-28945: Open-Xchange Appsuite

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

OX App Suite 7.10.4 and earlier allows XSS via crafted content to reach an undocumented feature, such as ![](http://onerror=Function.constructor, in a Notes item.

Affected products

• Open-Xchange Open-Xchange Appsuite: up to and including 7.10.4

Published 2021-05-03. Last modified 2026-06-17.