Is CVE-2023-0869 actively exploited?

No active exploitation of CVE-2023-0869 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-0869 be exploited remotely?

Yes. CVE-2023-0869 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-0869?

CVE-2023-0869 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2023-0869

MEDIUM

CVE-2023-0869

CWE-20Published: February 23, 2023· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-0869 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.