CyberRota Analysis
AI-GeneratedOpenNMS Horizon is vulnerable due to a missing authorization check in its REST API, allowing unauthenticated users to make configuration changes via the PATCH method. This can lead to the disabling of event definitions and SNMP data collection, effectively undermining monitoring and detection capabilities within the system. Organizations using OpenNMS Horizon should prioritize upgrading to version 36.0.4 or newer to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
A missing authorization vulnerability in OpenNMS Horizon allows configuration changes without authentication. The Spring Security policy for the /api/v2 REST API defines authorization rules for every HTTP method except PATCH, so the shipped @PATCH configuration endpoints for event configuration and SNMP data collection (which enable and disable event definitions and data-collection sources) are reachable with no authorization enforced. An unauthenticated attacker able to reach the web UI can disable event definitions and SNMP data collection, suppressing event and alarm generation and stopping metric collection - silently degrading monitoring and detection - with the change persisted and reloaded into the running system. The solution is to upgrade to Horizon 36.0.4 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.