CVE-2020-12760: opennms opennms_horizon Deserialization of Untrusted Data
Vulnerability summary
CVE-2020-12760 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in opennms opennms_horizon. EPSS estimates a 3.46% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities.
Timeline
- 11-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · MavenEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
3.46%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
0.00 pp
From 3.46% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Opennms2 products
- opennms_horizon< 26.1.0
- opennms_meridian< 2018.1.19 | ≥ 2019, < 2019.1.7
Org.opennms.core1 product
- org.opennms.core.daemon< 26.0.1
2 vendors · 3 products
References
12 links- www.opennms.com/en/blog/2020-04-29-opennms-horizon-26-0-1-luchador-released/X Refsource MISCRelease NotesVendor Advisory
- www.opennms.com/en/blog/2020-04-29-opennms-meridian-2019-1-6-europa-released/X Refsource MISCRelease NotesVendor Advisory
- www.opennms.com/en/blog/2020-04-29-opennms-meridian-2018-1-18-wildfire-released/X Refsource MISCRelease NotesVendor Advisory
- github.com/OpenNMS/opennmsPACKAGE