CVE-2026-19182 OpenNMS v2 Alarm REST API inverted authorization check lets ROLE_REST users acknowledge alarms as any user and bypass read-only

An incorrect authorization check in the v2 Alarm REST API in OpenNMS Meridian and Horizon allows a low-privileged authenticated user ROLEREST to acknowledge, escalate, or clear alarms recorded as an arbitrary username, and, when also assigned ROLEREADONLY, to modify alarm state despite the...

CVE-2020-27030

In onCreate of HandleApiCalls.java, there is a possible permission bypass due to a confused deputy. This could lead to local escalation of privilege that allows an app to set or dismiss the alarm with no additional execution privileges needed. User interaction is not needed for...

Design/Logic Flaw

In onCreate of HandleApiCalls.java, there is a possible permission bypass due to a confused deputy. This could lead to local escalation of privilege that allows an app to set or dismiss the alarm with no additional execution privileges needed. User interaction is not needed for...