CVE-2023-29046: Open-Xchange Appsuite

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Connections to external data sources, like e-mail autoconfiguration, were not terminated in case they hit a timeout, instead those connections were logged. Some connections use user-controlled endpoints, which could be malicious and attempt to keep the connection open for an extended period of time. As a result users were able to trigger large amount of egress network connections, possibly exhausting network pool resources and lock up legitimate requests. A new mechanism has been introduced to cancel external connections that might access user-controlled endpoints. No publicly available exploits are known.

Affected products

• Open-Xchange Open-Xchange Appsuite: before 7.10.6 (fixed in 7.10.6); version 7.10.6 only

Published 2023-11-02. Last modified 2026-06-17.