Opennms
Opennms Horizon: vulnerabilities and CVEs
Opennms Horizon has 29 published vulnerabilities, 5 of them in the last 12 months. 0 are rated critical and 0 are listed by CISA as actively exploited.
CVEs29
Last 12 months5
Critical0
Actively exploited0
All vulnerabilities in the catalogue →⭐ Follow this technology
Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-89089 | Medium (6.5) | 0.36% | — | Sep 10, 2026 | A SQL injection vulnerability exists in the JasperReports-based reporting feature of multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user (ROLE_USER) can run the shipped,… |
| CVE-2026-19596 | Medium (5.9) | 0.21% | — | Sep 10, 2026 | An XML External Entity (XXE) vulnerability exists in the XML collector of multiple versions of OpenNMS Meridian and Horizon. When OpenNMS collects XML from a source whose response is attacker-controlled (for example a… |
| CVE-2026-89054 | High (8.2) | 0.51% | — | Sep 10, 2026 | 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… |
| CVE-2026-19182 | Medium (4.3) | 0.25% | — | Aug 13, 2026 | An incorrect authorization check in the v2 Alarm REST API in OpenNMS Meridian and Horizon allows a low-privileged authenticated user (ROLE_REST) to acknowledge, escalate, or clear alarms recorded as an arbitrary… |
| CVE-2026-19135 | Medium (5.4) | 0.29% | — | Aug 13, 2026 | 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… |
| CVE-2025-53122 | Medium (6.9) | 0.24% | — | Jun 26, 2025 | Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in OpenNMS Horizon and Meridian applications allows SQL Injection. Users should upgrade to Meridian 2024.2.6 or newer,… |
| CVE-2025-53121 | Medium (6.9) | 0.24% | — | Jun 26, 2025 | Multiple stored XSS were found on different nodes with unsanitized parameters in OpenMNS Horizon 33.0.8 and versions earlier than 33.1.6 on multiple platforms that allow an attacker to store on database and then inject… |
| CVE-2023-40314 | Medium (6.1) | 0.43% | — | Nov 16, 2023 | Cross-site scripting in bootstrap.jsp in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information. The solution is to upgrade to Horizon 32.0.5 or newer and… |
| CVE-2023-40612 | High (8) | 0.42% | — | Aug 23, 2023 | In OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2, the file editor which is accessible to any user with ROLE_FILESYSTEM_EDITOR privileges is vulnerable to XXE injection attacks. The solution is to upgrade to… |
| CVE-2023-40315 | High (8) | 2.9% | — | Aug 17, 2023 | In OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 and related Meridian versions, any user that has the ROLE_FILESYSTEM_EDITOR can easily escalate their privileges to ROLE_ADMIN or any other role. The solution… |
| CVE-2023-40313 | High (8.8) | 0.78% | — | Aug 17, 2023 | A BeanShell interpreter in remote server mode runs in OpenMNS Horizon versions earlier than 32.0.2 and in related Meridian versions which could allow arbitrary remote Java code execution. The solution is to upgrade to… |
| CVE-2023-40312 | Medium (5.2) | 0.64% | — | Aug 14, 2023 | Multiple reflected XSS were found on different JSP files with unsanitized parameters in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms that an attacker can modify to craft a malicious XSS… |
| CVE-2023-40311 | Medium (4.8) | 0.74% | — | Aug 14, 2023 | Multiple stored XSS were found on different JSP files with unsanitized parameters in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms that allow an attacker to store on database and then… |
| CVE-2023-0872 | High (8) | 3.3% | — | Aug 14, 2023 | The Horizon REST API includes a users endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to elevation of privilege. The solution is to upgrade to Meridian 2023.1.6,… |
| CVE-2023-0871 | Medium (6.1) | 0.55% | — | Aug 11, 2023 | XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon… |
| CVE-2023-0870 | Medium (6.7) | 0.30% | — | Mar 22, 2023 | A form can be manipulated with cross-site request forgery in multiple versions of OpenNMS Meridian and Horizon. This can potentially allow an attacker to gain access to confidential information and compromise integrity.… |
| CVE-2023-0869 | Medium (6.1) | 0.41% | — | Feb 23, 2023 | Cross-site scripting in outage/list.htm in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information. The solution is to upgrade to Meridian 2023.1.0 or newer, or… |
| CVE-2023-0868 | Medium (6.1) | 0.44% | — | Feb 23, 2023 | Reflected cross-site scripting in graph results in multiple versions of OpenNMS Meridian and Horizon could allow an attacker access to steal session cookies. Users should upgrade to Meridian 2023.1.0 or newer, or… |
| CVE-2023-0867 | Medium (6.1) | 0.42% | — | Feb 23, 2023 | Multiple stored and reflected cross-site scripting vulnerabilities in webapp jsp pages in multiple versions of OpenNMS Meridian and Horizon could allow an attacker access to confidential session information. Users… |
| CVE-2023-0815 | Medium (6.5) | 0.63% | — | Feb 23, 2023 | Potential Insertion of Sensitive Information into Jetty Log Files in multiple versions of OpenNMS Meridian and Horizon could allow disclosure of usernames and passwords if the logging level is set to debug. Users should… |
| CVE-2023-0846 | Medium (6.1) | 0.49% | — | Feb 22, 2023 | Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users should… |
| CVE-2021-25935 | Medium (5.4) | 0.91% | — | May 25, 2021 | In OpenNMS Horizon, versions opennms-17.0.0-1 through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-25934 | Medium (5.4) | 1.0% | — | May 25, 2021 | In OpenNMS Horizon, versions opennms-18.0.0-1 through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-25933 | Medium (4.8) | 1.0% | — | May 20, 2021 | In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-25931 | High (8.8) | 0.73% | — | May 20, 2021 | In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-25929 | Medium (4.8) | 1.0% | — | May 20, 2021 | In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-25930 | Medium (4.3) | 0.63% | — | May 20, 2021 | In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through… |
| CVE-2021-3396 | High (8.8) | 2.4% | — | Feb 17, 2021 | OpenNMS Meridian 2016, 2017, 2018 before 2018.1.25, 2019 before 2019.1.16, and 2020 before 2020.1.5, Horizon 1.2 through 27.0.4, and Newts <1.5.3 has Incorrect Access Control, which allows local and remote code… |
| CVE-2020-11886 | High (8.1) | 1.4% | — | Apr 17, 2020 | OpenNMS Horizon and Meridian allows HQL Injection in element/nodeList.htm (aka the NodeListController) via snmpParm or snmpParmValue to addCriteriaForSnmpParm. This affects Horizon before 25.2.1, Meridian 2019 before… |
🎯 How it gets exploited (ATT&CK techniques)
Number of CVEs of this technology mapped to each exploitation or primary-impact technique.