CVE-2026-19135
CVE-2026-19135 · OpenNMS JEXL sandbox bypass in Measurements REST API allows ROLE_USER to load arbitrary classes
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A JEXL expression sandbox bypass exists in multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user can submit a crafted expression to the Measurements REST API that escapes the sandbox and loads arbitrary Java classes on the server. This can potentially allow an attacker to gain access to confidential information and compromise integrity. The solution is to upgrade to Meridian 2024.3.12, 2025.0.9 and Horizon 36.0.3 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.
CVSS 5.4 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
meridian
- Versions
- ≥ 2024.1.0, < 2024.3.12: Affected (maven)
- ≥ 2025.0.0, < 2025.0.9: Affected (maven)
Update to 2024.3.12; Update to 2025.0.9
horizon
- Versions
- ≥ 36.0.0, < 36.0.3: Affected (maven)
Update to 36.0.3
horizon Ubuntu:16.04:LTS
- Versions
- 2:8.0.0-0ubuntu2
- 2:9.0.0~b1-0ubuntu1
- 2:9.0.0~b1-0ubuntu2
- 2:9.0.0~b2-0ubuntu1
- 2:9.0.0~b3-0ubuntu1
- 2:9.0.0~rc1-0ubuntu1
- 2:9.0.0-0ubuntu1
- 2:9.0.0-0ubuntu2
- 2:9.0.0-0ubuntu2.16.04.1
- 2:9.0.1-0ubuntu2
- 2:9.1.0-0ubuntu1
- 2:9.1.1-0ubuntu1
- 2:9.1.2-0ubuntu1
- 2:9.1.2-0ubuntu2
- 2:9.1.2-0ubuntu3
- 2:9.1.2-0ubuntu5
- 2:9.1.2-0ubuntu5.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:18.04:LTS
- Versions
- 3:12.0.0-0ubuntu2.1
- 3:12.0.0-0ubuntu3
- 3:13.0.0~b1-0ubuntu1
- 3:13.0.0~b1-0ubuntu2
- 3:13.0.0-0ubuntu1
- 3:13.0.0-0ubuntu1.1
- 3:13.0.1-0ubuntu1
- 3:13.0.1-0ubuntu2
- 3:13.0.1-0ubuntu3
- 3:13.0.1-0ubuntu4
- 3:13.0.1-0ubuntu5
- 3:13.0.1-0ubuntu6
- 3:13.0.2-0ubuntu1
- 3:13.0.2-0ubuntu2
- 3:13.0.2-0ubuntu3
- 3:13.0.3-0ubuntu1
- 3:13.0.3-0ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:Pro:20.04:LTS
- Versions
- 3:16.0.0-0ubuntu1
- 3:17.0.0~b1~git2019121712.f7313b74c-0ubuntu1
- 3:18.0.1~git2020021409.bb959361b-0ubuntu2
- 3:18.0.1~git2020021409.bb959361b-0ubuntu3
- 3:18.2.1~git2020032709.2c4470272-0ubuntu1
- 3:18.2.1~git2020041013.754804667-0ubuntu1
- 3:18.2.1~git2020041013.754804667-0ubuntu2
- 3:18.2.1~git2020041013.754804667-0ubuntu3
- 3:18.3.2-0ubuntu0.20.04.1
- 3:18.3.2-0ubuntu0.20.04.2
- 3:18.3.2-0ubuntu0.20.04.4
- 3:18.3.3-0ubuntu1
- 3:18.3.4-0ubuntu1
- 3:18.3.5-0ubuntu1
- 3:18.3.5-0ubuntu2
- 3:18.3.5-0ubuntu2.1
- 3:18.3.5-0ubuntu2.2
- 3:18.3.5-0ubuntu2.3
- 3:18.3.5-0ubuntu2.3+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:22.04:LTS
- Versions
- 4:20.1.0-0ubuntu1
- 4:20.2.0+git2021120911.fc1012628-0ubuntu1
- 4:20.2.0+git2022011216.8fe5bbc8d-0ubuntu1
- 4:21.0.0+git2022030313.dd9e4c82b-0ubuntu2
- 4:22.1.0-0ubuntu1
- 4:22.1.0-0ubuntu2
- 4:22.1.0-0ubuntu2.1
- 4:22.1.1-0ubuntu1
- 4:22.1.1-0ubuntu1.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:24.04:LTS
- Versions
- 4:23.3.0-0ubuntu1
- 4:23.3.0-0ubuntu2
- 4:23.4.0+git2024011916.a77818d7-0ubuntu1
- 4:24.0.0-0ubuntu1
- 4:24.0.0-0ubuntu1.1
- 4:24.0.0-0ubuntu1.2
- 4:24.0.0-0ubuntu1.3
- 4:24.0.1-0ubuntu0.24.04.1
- 4:24.0.1-0ubuntu0.24.04.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:26.10
- Versions
- 4:25.7.1-0ubuntu1
- 4:26.0.0-0ubuntu1
- 4:27.0.0-0ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
horizon Ubuntu:26.04:LTS
- Versions
- 4:25.5.1-0ubuntu1
- 4:25.5.1-0ubuntu2
- 4:25.5.1+git2026012819.479212220-0ubuntu1
- 4:25.7.1-0ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published