CVE-2018-5753: Open-Xchange Appsuite

Medium severity, CVSS 6.5. EPSS: 8.3% chance of exploitation in the next 30 days.

The frontend component in Open-Xchange OX App Suite before 7.6.3-rev31, 7.8.x before 7.8.2-rev31, 7.8.3 before 7.8.3-rev41, and 7.8.4 before 7.8.4-rev20 allows remote attackers to spoof the origin of e-mails via unicode characters in the "personal part" of a (1) From or (2) Sender address.

Affected products

• Open-Xchange Open-Xchange Appsuite: up to and including 7.6.3; version 7.6.3 only; version 7.8.0 only; version 7.8.2 only; version 7.8.3 only; version 7.8.4 only

Published 2018-06-16. Last modified 2026-06-17.