79 20
Advisory Published

CVE-2023-0869: XSS

First published: Thu Feb 23 2023(Updated: )

Cross-site scripting in outage/list.htm in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information. The solution is to upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4 or newer. 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 SoftwareAffected VersionHow to fix
OpenNMS Horizon<31.0.4
OpenNMS Meridian<2023.1.0

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Frequently Asked Questions

  • What is CVE-2023-0869?

    CVE-2023-0869 is a vulnerability in OpenNMS Meridian and Horizon that allows an attacker to access confidential session information through cross-site scripting in outage/list.htm.

  • How severe is CVE-2023-0869?

    CVE-2023-0869 has a severity value of 6.1, which is considered medium.

  • Which versions of OpenNMS Meridian and Horizon are affected?

    Versions of OpenNMS Horizon up to but excluding 31.0.4, and versions of OpenNMS Meridian up to but excluding 2023.1.0 are affected.

  • How can I fix CVE-2023-0869?

    To fix CVE-2023-0869, you need to upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4 or newer.

  • Where can I find more information about CVE-2023-0869?

    More information about CVE-2023-0869 can be found in the OpenNMS Meridian 2023.1.0 release notes and the related GitHub pull request.


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