What’s Vulnerable › Vulnerabilities

CVE-2023-0815: Plaintext Password Present in the Web logs

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-23 · updated 2026-06-17
• Weakness: CWE-532

Description

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

• The OpenNMS Group Horizon: before 31.0.4 — fixed in 31.0.4
• The OpenNMS Group Meridian: before 2023.1.0 — fixed in 2023.1.0

How to fix

Upgrade to a fixed version: The OpenNMS Group Horizon 31.0.4; The OpenNMS Group Meridian 2023.1.0. Check the vendor advisory for mitigations.

References

• https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13
• https://github.com/OpenNMS/opennms/pull/5741/files
• https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13
• https://github.com/OpenNMS/opennms/pull/5741/files

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