CVE-2016-3174: Open-Xchange Appsuite

High severity, CVSS 7.4. EPSS: 1% chance of exploitation in the next 30 days.

An issue was discovered in Open-Xchange OX AppSuite before 7.8.0-rev27. The "defer" servlet offers to redirect a client to a specified URL. Since some checks were missing, arbitrary URLs could be provided as redirection target. Users can be tricked to follow a link to a trustworthy domain but end up at an unexpected service later on. This vulnerability can be used to prepare and enhance phishing attacks.

Affected products

• Open-Xchange Open-Xchange Appsuite: up to and including 7.8.0

Published 2016-12-15. Last modified 2026-06-17.