CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2020-12760
High (8.8) in opennms. EPSS 3.5% chance of exploitation in the next 30 days. Fixed in org.opennms.core:org.opennms.core.daemon 26.0.1.
An issue was discovered in OpenNMS Horizon before 26.0.1, and Meridian before 2018.1.19 and 2019 before 2019.1.7. The ActiveMQ channel configuration allowed for arbitrary deserialization of Java objects (aka ActiveMQ Minion payload deserialization), leading to remote code execution for any authenticated channel user regardless of its assigned permissions.
Severity
- EPSS
- 3.5% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
- CWE
- CWE-502
- Published
- Modified
- Record from
- the NVD, synced
Affected
- opennms:opennms_horizon
- opennms:opennms_meridian
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-853f-x27w-8r74 | Maven | org.opennms.core:org.opennms.core.daemon | <26.0.1 | 26.0.1 |
References
- https://github.com/OpenNMS/opennms/releases/tag/opennms-26.0.1-1
- https://issues.opennms.org/browse/NMS-12673
- https://www.opennms.com/en/blog/2020-04-29-opennms-horizon-26-0-1-luchador-released/
- https://www.opennms.com/en/blog/2020-04-29-opennms-meridian-2018-1-18-wildfire-released/
- https://www.opennms.com/en/blog/2020-04-29-opennms-meridian-2019-1-6-europa-released/