CVE-2023-40313

Name: CVE-2023-40313
Creator: NVD / NIST
Published: 2023-08-17T19:15:13.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2023-40313 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A BeanShell interpreter in remote server mode runs in OpenMNS Horizon versions earlier than 32.0.2 and in related Meridian versions which could allow arbitrary remote Java code execution. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

A BeanShell interpreter in remote server mode runs in OpenMNS Horizon versions earlier than 32.0.2 and in related Meridian versions which could allow arbitrary remote Java code execution. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.70%

48.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Opennms	Horizon	< 32.0.2
Opennms	Meridian	< 2020.1.38
Opennms	Meridian	>= 2021.1.0, < 2021.1.30
Opennms	Meridian	>= 2022.1.0, < 2022.1.19
Opennms	Meridian	>= 2023.1.0, < 2023.1.6

References

https://docs.opennms.com/horizon/32/releasenotes/changelog.htmlRelease Notes
https://github.com/OpenNMS/opennms/pull/6368Issue Tracking, Patch
https://docs.opennms.com/horizon/32/releasenotes/changelog.htmlRelease Notes
https://github.com/OpenNMS/opennms/pull/6368Issue Tracking, Patch

Timeline

Published: Aug 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40313?

How severe is CVE-2023-40313?

CVE-2023-40313 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40313?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40313?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST