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CVE-2023-40313

24
FAUCET Score

CVE-2023-40313 is a high-severity vulnerability affecting OpenNMS Horizon versions prior to 32.0.2 and related Meridian versions, stemming from a BeanShell interpreter running in remote server mode. This flaw allows for arbitrary remote Java code execution, posing a significant risk to confidentiality, integrity, and availability. While the CVSS score is 8.8 (High) due to its network-adjacent attack vector and low attack complexity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. Organizations are advised to upgrade to the recommended patched versions of Meridian or Horizon, noting that these products are intended for private network deployment and should not be internet-facing.

Impacted Technologies

VendorProductVersion(s)CPE
< 32.0.2CPE matchmatch criteria
cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:*
< 2020.1.38CPE matchmatch criteria
cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
>= 2021.1.0, < 2021.1.30CPE matchmatch criteria
cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
>= 2022.1.0, < 2022.1.19CPE matchmatch criteria
cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
>= 2023.1.0, < 2023.1.6CPE matchmatch criteria
cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 54th percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.opennms:opennms-base-assemblyFixed in: 32.0.2

Vendor Advisories (1)

mavenGHSA-5m5f-qg8r-p9qfhigh

OpenNMS vulnerable to remote code execution

Aug 17, 2023

References

docs.opennms.com / horizon/32/releasenotes/changelog.html
Release Notes
github.com / OpenNMS/opennms/pull/6368
Issue TrackingPatch