CVE-2023-0815: Opennms Horizon

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Potential Insertion of Sensitive Information into Jetty Log Files in multiple versions of OpenNMS Meridian and Horizon could allow disclosure of usernames and passwords if the logging level is set to debug. Users should upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet.

Affected products

• Opennms Horizon: before 31.0.4 (fixed in 31.0.4)
• Opennms Meridian: before 2023.1.0 (fixed in 2023.1.0)

Published 2023-02-23. Last modified 2026-06-17.