Advisory Published

CVE-2023-0846: XSS

First published: Wed Feb 22 2023(Updated: )

Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. 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 SoftwareAffected VersionHow to fix
OpenNMS Horizon<31.0.4
OpenNMS Meridian<2023.1.0

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Frequently Asked Questions

  • What is CVE-2023-0846?

    CVE-2023-0846 is an unauthenticated stored cross-site scripting vulnerability found in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian.

  • How severe is CVE-2023-0846?

    CVE-2023-0846 has a severity rating of 6.1, which is classified as medium.

  • Which software versions are affected by CVE-2023-0846?

    CVE-2023-0846 affects OpenNMS Horizon versions up to and including 31.0.4, and OpenNMS Meridian versions up to and including 2023.1.0.

  • How can I fix CVE-2023-0846?

    To fix CVE-2023-0846, users should upgrade to OpenNMS Meridian 2023.1.0 or newer, or OpenNMS Horizon 31.0.4.

  • What is the CWE classification of CVE-2023-0846?

    CVE-2023-0846 is classified under CWE-79, which is Cross-Site Scripting (XSS).


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