Advisory Published
Advisory Published


First published: Wed Feb 17 2021(Updated: )

OpenNMS Meridian 2016, 2017, 2018 before 2018.1.25, 2019 before 2019.1.16, and 2020 before 2020.1.5, Horizon 1.2 through 27.0.4, and Newts <1.5.3 has Incorrect Access Control, which allows local and remote code execution using JEXL expressions.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
OpenNMS Horizon>=16.0.0<=27.0.3
OpenNMS Meridian>=2016.1.0<=2016.1.24
OpenNMS Meridian>=2017.1.0<=2017.1.26
OpenNMS Meridian>=2018.1.0<2018.1.25
OpenNMS Meridian>=2019.1.0<2019.1.16
OpenNMS Meridian>=2020.1.0<2020.1.5
Opennms Newts<1.5.3

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Frequently Asked Questions

  • What is vulnerability CVE-2021-3396?

    Vulnerability CVE-2021-3396 is an Incorrect Access Control vulnerability in OpenNMS Meridian and Horizon, allowing local and remote code execution.

  • What is the severity of CVE-2021-3396?

    CVE-2021-3396 has a severity rating of 8.8 (High).

  • Which versions of OpenNMS Meridian and Horizon are affected by CVE-2021-3396?

    OpenNMS Meridian versions 2016.1.0 to 2016.1.24, 2017.1.0 to 2017.1.26, 2018.1.0 to 2018.1.25, 2019.1.0 to 2019.1.16, and 2020.1.0 to 2020.1.5, as well as OpenNMS Horizon versions 16.0.0 to 27.0.3 are affected by CVE-2021-3396.

  • What is the remedy for CVE-2021-3396?

    To remedy CVE-2021-3396, upgrade to OpenNMS Meridian 2018.1.25, 2019.1.16, or 2020.1.5, or Horizon 27.0.4, and make sure to update the affected packages.

  • Where can I find more information about CVE-2021-3396?

    You can find more information about CVE-2021-3396 on the NIST NVD website, the OpenNMS blog, and the OpenNMS GitHub repository.


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