CVE-2023-0871

MEDIUM

OpenNMS Horizon < 32.0.2 and Meridian < 2020.1.38 - XML External Entity Injection via /rtc/post/ Endpoint

Title source: llm

Description

XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon to make arbitrary HTTP requests to internal and external services. 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. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.

References (2)

Core 2

Core References

Release Notes

https://docs.opennms.com/horizon/32/releasenotes/changelog.html

Patch

https://github.com/OpenNMS/opennms/pull/6355

Scores

CVSS v3 5.4

EPSS 0.0049

EPSS Percentile 38.0%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-611

Status published

Products (4)

opennms/horizon 31.0.8

opennms/horizon 32.0.0 - 32.0.2

opennms/meridian 2020.0.0 - 2020.1.38

org.opennms.core/org.opennms.core.xml 31.0.8 - 32.0.2Maven

Published Aug 11, 2023

Tracked Since Feb 18, 2026