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42 vulnerabilities by The OpenNMS Group
CVE-2026-89089 (GCVE-0-2026-89089)
Vulnerability from nvd – Published: 2026-09-10 20:30 – Updated: 2026-09-11 14:51
VLAI
EPSS
VEX
Title
OpenNMS SQL injection in shipped Asset Management JasperReports via the DATE_FORMAT parameter (ROLE_USER)
Summary
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, default-enabled online reports "Maintenance contracts expired" (AssetManagementMaintExpired) and "Maintenance contracts strategy" (AssetManagementMaintStrategy) via the reporting REST API (POST /rest/reports/{id}) and supply a DATE_FORMAT parameter that the report templates substitute literally, un-escaped, into their SQL queries. This lets an attacker execute arbitrary SQL against the OpenNMS database and read arbitrary data, including database-stored secrets such as provisioning and notification credentials and SNMP community strings.
The solution is to upgrade to Meridian 2024.3.13, 2025.0.10 and Horizon 36.0.4 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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 14:51 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8832 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.13
(maven)
Affected: 2025.0.0 , < 2025.0.10 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.4
(maven)
|
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CVE-2026-19596 (GCVE-0-2026-19596)
Vulnerability from nvd – Published: 2026-09-10 20:08 – Updated: 2026-09-10 20:27
VLAI
EPSS
VEX
Title
OpenNMS XML collector XXE allows arbitrary file read from the OpenNMS host
Summary
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 compromised monitored host or an HTTP man-in-the-middle position), the collector's XML parser resolves external entities and external DTDs. This allows an attacker to read files accessible to the OpenNMS service account, including database credentials, and to induce out-of-band requests.
The solution is to upgrade to Meridian 2024.3.13, 2025.0.10 and Horizon 36.0.4 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.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:27 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8782 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.13
(maven)
Affected: 2025.0.0 , < 2025.0.10 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.4
(maven)
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CVE-2026-89054 (GCVE-0-2026-89054)
Vulnerability from nvd – Published: 2026-09-10 19:36 – Updated: 2026-09-10 20:03
VLAI
EPSS
VEX
Title
OpenNMS missing authorization on /api/v2 PATCH endpoints allows unauthenticated configuration changes
Summary
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 PATCH, so the shipped @PATCH configuration endpoints for event configuration and SNMP data collection (which enable and disable event definitions and data-collection sources) are reachable with no authorization enforced. An unauthenticated attacker able to reach the web UI can disable event definitions and SNMP data collection, suppressing event and alarm generation and stopping metric collection - silently degrading monitoring and detection - with the change persisted and reloaded into the running system.
The solution is to upgrade to Horizon 36.0.4 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.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:02 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8833 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.4
(maven)
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CVE-2026-19182 (GCVE-0-2026-19182)
Vulnerability from nvd – Published: 2026-08-13 04:50 – Updated: 2026-08-13 13:01
VLAI
EPSS
VEX
Title
OpenNMS v2 Alarm REST API inverted authorization check lets ROLE_REST users acknowledge alarms as any user and bypass read-only
Summary
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 username, and, when also assigned ROLE_READONLY, to modify alarm state despite the read-only restriction. A credential check that should restrict these operations is guarded by an inverted condition, so it never executes for a real (non-blank) username. This can potentially allow an attacker to compromise the integrity of alarm state and audit records.
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.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:01 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8755 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.12
(maven)
Affected: 2025.0.0 , < 2025.0.9 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.3
(maven)
|
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CVE-2026-19135 (GCVE-0-2026-19135)
Vulnerability from nvd – Published: 2026-08-13 04:47 – Updated: 2026-08-13 13:02
VLAI
EPSS
VEX
Title
OpenNMS JEXL sandbox bypass in Measurements REST API allows ROLE_USER to load arbitrary classes
Summary
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:02 UTC
CWE
- CWE-470 - Use of Externally-Controlled input to select classes or code ('unsafe reflection')
Assigner
References
1 reference
Impacted products
2 products
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|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.12
(maven)
Affected: 2025.0.0 , < 2025.0.9 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.3
(maven)
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CVE-2025-53122 (GCVE-0-2025-53122)
Vulnerability from nvd – Published: 2025-06-26 19:49 – Updated: 2025-06-26 20:03
VLAI
EPSS
VEX
Title
SQLi in OpenNMS Horizon and Meridian
Summary
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, or Horizon 33.16 or newer. Meridian and
Horizon installation instructions state that they are intended for installation
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 20:03 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
25.2.1 , < 33.1.6, 33.1.7
(git)
Affected: 33.0.8 , < 33.1.6, 33.1.7 (git) Unknown: 25.2.1 , ≤ 33.0.8 (git) |
|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.2.6, 2024.2.7
(git)
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CVE-2025-53121 (GCVE-0-2025-53121)
Vulnerability from nvd – Published: 2025-06-26 18:51 – Updated: 2025-06-26 19:07
VLAI
EPSS
VEX
Title
Stored XSS in multiple 33.0.8files in opennms/opennms
Summary
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 HTML and/or Javascript on the page. The solution is to upgrade to Horizon 33.1.6, 33.1.7 or Meridian 2024.2.6, 2024.2.7 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. OpenNMS thanks Fábio Tomé for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 19:07 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
33.0.8 , < 33.1.6, 33.1.7
(maven)
Unknown: 0 , < 33.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2024.1.4 , < 2024.2.6, 2024.2.7
(maven)
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CVE-2023-40314 (GCVE-0-2023-40314)
Vulnerability from nvd – Published: 2023-11-16 21:14 – Updated: 2024-08-29 14:45
VLAI
EPSS
VEX
Title
Cross-site scripting in bootstrap.jsp
Summary
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 Meridian 2023.1.9 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.
OpenNMS thanks
Moshe Apelbaum
for reporting this issue.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-29 14:44 UTC
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.4
(git)
|
|
| The OpenNMS Group | Meridian |
Unknown:
0 , < 2023.1.8
(git)
|
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CVE-2023-40612 (GCVE-0-2023-40612)
Vulnerability from nvd – Published: 2023-08-23 18:22 – Updated: 2024-10-01 15:52
VLAI
EPSS
VEX
Title
Authenticated XXE Injection Via The File Editor
Summary
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 Meridian 2023.1.5 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter for reporting this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 15:11 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2023.0.0 , < 2023.1.5
(maven)
Unknown: 0 , < 2023.0.0 (maven) |
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CVE-2023-40315 (GCVE-0-2023-40315)
Vulnerability from nvd – Published: 2023-08-17 19:04 – Updated: 2024-10-28 19:17
VLAI
EPSS
VEX
Title
ROLE_FILESYSTEM_EDITOR Can Be Used To Escalate To ROLE_ADMIN
Summary
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 is to upgrade to Meridian 2023.1.5 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter for reporting this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 17:47 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2023.0.0 , < 2023.1.5
(maven)
Unknown: 0 , < 2023.0.0 (maven) |
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CVE-2023-40313 (GCVE-0-2023-40313)
Vulnerability from nvd – Published: 2023-08-17 18:24 – Updated: 2024-10-08 13:04
VLAI
EPSS
VEX
Title
Disable BeanShell Interpreter Remote Server Mode
Summary
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 Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-08 12:59 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
29.0.4 , < 32.0.2
(maven)
Unknown: 0 , < 29.0.4 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
|
| opennms | horizon |
Affected:
29.0.4 , < 32.0.2
(maven)
Unknown: 0 , < 29.0.4 (maven) cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:* |
|
| opennms | meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:* |
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CVE-2023-40312 (GCVE-0-2023-40312)
Vulnerability from nvd – Published: 2023-08-14 17:35 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Reflected XSS in multiple JSP files in opennms/opennms
Summary
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 payload. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Jordi Miralles Comins for reporting this issue.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-27 21:49 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-40311 (GCVE-0-2023-40311)
Vulnerability from nvd – Published: 2023-08-14 17:31 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Stored XSS in multiple JSP files in opennms/opennms
Summary
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 load on JSPs or Angular templates. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Jordi Miralles Comins for reporting this issue.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-27 21:49 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-0872 (GCVE-0-2023-0872)
Vulnerability from nvd – Published: 2023-08-14 17:21 – Updated: 2024-10-03 20:25
VLAI
EPSS
VEX
Title
ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users
Summary
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, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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.
OpenNMS thanks Erik Wynter for reporting this issue.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-03 20:25 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
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|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-0871 (GCVE-0-2023-0871)
Vulnerability from nvd – Published: 2023-08-11 16:13 – Updated: 2024-10-01 19:13
VLAI
EPSS
VEX
Title
An XML External Entity injection vulnerability
Summary
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 to make arbitrary HTTP requests to internal and external services. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 19:06 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
Impacted products
2 products
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|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
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|
| The OpenNMS Group | Meridian |
Affected:
2023.0.0 , < 2023.1.6
(maven)
Affected: 2022.0.0 , < 2022.1.19 (maven) Affected: 2021.0.0 , < 2021.1.30 (maven) Affected: 2020.0.0 , < 2020.1.38 (maven) |
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CVE-2026-89089 (GCVE-0-2026-89089)
Vulnerability from cvelistv5 – Published: 2026-09-10 20:30 – Updated: 2026-09-11 14:51
VLAI
EPSS
VEX
Title
OpenNMS SQL injection in shipped Asset Management JasperReports via the DATE_FORMAT parameter (ROLE_USER)
Summary
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, default-enabled online reports "Maintenance contracts expired" (AssetManagementMaintExpired) and "Maintenance contracts strategy" (AssetManagementMaintStrategy) via the reporting REST API (POST /rest/reports/{id}) and supply a DATE_FORMAT parameter that the report templates substitute literally, un-escaped, into their SQL queries. This lets an attacker execute arbitrary SQL against the OpenNMS database and read arbitrary data, including database-stored secrets such as provisioning and notification credentials and SNMP community strings.
The solution is to upgrade to Meridian 2024.3.13, 2025.0.10 and Horizon 36.0.4 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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 14:51 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8832 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.13
(maven)
Affected: 2025.0.0 , < 2025.0.10 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.4
(maven)
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CVE-2026-19596 (GCVE-0-2026-19596)
Vulnerability from cvelistv5 – Published: 2026-09-10 20:08 – Updated: 2026-09-10 20:27
VLAI
EPSS
VEX
Title
OpenNMS XML collector XXE allows arbitrary file read from the OpenNMS host
Summary
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 compromised monitored host or an HTTP man-in-the-middle position), the collector's XML parser resolves external entities and external DTDs. This allows an attacker to read files accessible to the OpenNMS service account, including database credentials, and to induce out-of-band requests.
The solution is to upgrade to Meridian 2024.3.13, 2025.0.10 and Horizon 36.0.4 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.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:27 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8782 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.13
(maven)
Affected: 2025.0.0 , < 2025.0.10 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.4
(maven)
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CVE-2026-89054 (GCVE-0-2026-89054)
Vulnerability from cvelistv5 – Published: 2026-09-10 19:36 – Updated: 2026-09-10 20:03
VLAI
EPSS
VEX
Title
OpenNMS missing authorization on /api/v2 PATCH endpoints allows unauthenticated configuration changes
Summary
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 PATCH, so the shipped @PATCH configuration endpoints for event configuration and SNMP data collection (which enable and disable event definitions and data-collection sources) are reachable with no authorization enforced. An unauthenticated attacker able to reach the web UI can disable event definitions and SNMP data collection, suppressing event and alarm generation and stopping metric collection - silently degrading monitoring and detection - with the change persisted and reloaded into the running system.
The solution is to upgrade to Horizon 36.0.4 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.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:02 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8833 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
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(maven)
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CVE-2026-19182 (GCVE-0-2026-19182)
Vulnerability from cvelistv5 – Published: 2026-08-13 04:50 – Updated: 2026-08-13 13:01
VLAI
EPSS
VEX
Title
OpenNMS v2 Alarm REST API inverted authorization check lets ROLE_REST users acknowledge alarms as any user and bypass read-only
Summary
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 username, and, when also assigned ROLE_READONLY, to modify alarm state despite the read-only restriction. A credential check that should restrict these operations is guarded by an inverted condition, so it never executes for a real (non-blank) username. This can potentially allow an attacker to compromise the integrity of alarm state and audit records.
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.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:01 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenNMS/opennms/pull/8755 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.12
(maven)
Affected: 2025.0.0 , < 2025.0.9 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.3
(maven)
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CVE-2026-19135 (GCVE-0-2026-19135)
Vulnerability from cvelistv5 – Published: 2026-08-13 04:47 – Updated: 2026-08-13 13:02
VLAI
EPSS
VEX
Title
OpenNMS JEXL sandbox bypass in Measurements REST API allows ROLE_USER to load arbitrary classes
Summary
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:02 UTC
CWE
- CWE-470 - Use of Externally-Controlled input to select classes or code ('unsafe reflection')
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.3.12
(maven)
Affected: 2025.0.0 , < 2025.0.9 (maven) |
|
| The OpenNMS Group | Horizon |
Affected:
36.0.0 , < 36.0.3
(maven)
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CVE-2025-53122 (GCVE-0-2025-53122)
Vulnerability from cvelistv5 – Published: 2025-06-26 19:49 – Updated: 2025-06-26 20:03
VLAI
EPSS
VEX
Title
SQLi in OpenNMS Horizon and Meridian
Summary
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, or Horizon 33.16 or newer. Meridian and
Horizon installation instructions state that they are intended for installation
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 20:03 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
25.2.1 , < 33.1.6, 33.1.7
(git)
Affected: 33.0.8 , < 33.1.6, 33.1.7 (git) Unknown: 25.2.1 , ≤ 33.0.8 (git) |
|
| The OpenNMS Group | Meridian |
Affected:
2024.1.0 , < 2024.2.6, 2024.2.7
(git)
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CVE-2025-53121 (GCVE-0-2025-53121)
Vulnerability from cvelistv5 – Published: 2025-06-26 18:51 – Updated: 2025-06-26 19:07
VLAI
EPSS
VEX
Title
Stored XSS in multiple 33.0.8files in opennms/opennms
Summary
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 HTML and/or Javascript on the page. The solution is to upgrade to Horizon 33.1.6, 33.1.7 or Meridian 2024.2.6, 2024.2.7 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. OpenNMS thanks Fábio Tomé for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 19:07 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
33.0.8 , < 33.1.6, 33.1.7
(maven)
Unknown: 0 , < 33.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2024.1.4 , < 2024.2.6, 2024.2.7
(maven)
Affected: 2023.1.20 , < 2024.2.6, 2024.2.7 (maven) Unknown: 2023.0.0 , ≤ 2023.1.20 (maven) Unknown: 2024.0.0 , ≤ 2024.1.4 (maven) |
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CVE-2023-40314 (GCVE-0-2023-40314)
Vulnerability from cvelistv5 – Published: 2023-11-16 21:14 – Updated: 2024-08-29 14:45
VLAI
EPSS
VEX
Title
Cross-site scripting in bootstrap.jsp
Summary
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 Meridian 2023.1.9 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.
OpenNMS thanks
Moshe Apelbaum
for reporting this issue.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-29 14:44 UTC
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.4
(git)
|
|
| The OpenNMS Group | Meridian |
Unknown:
0 , < 2023.1.8
(git)
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CVE-2023-40612 (GCVE-0-2023-40612)
Vulnerability from cvelistv5 – Published: 2023-08-23 18:22 – Updated: 2024-10-01 15:52
VLAI
EPSS
VEX
Title
Authenticated XXE Injection Via The File Editor
Summary
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 Meridian 2023.1.5 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter for reporting this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 15:11 UTC
CWE
- CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2023.0.0 , < 2023.1.5
(maven)
Unknown: 0 , < 2023.0.0 (maven) |
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CVE-2023-40315 (GCVE-0-2023-40315)
Vulnerability from cvelistv5 – Published: 2023-08-17 19:04 – Updated: 2024-10-28 19:17
VLAI
EPSS
VEX
Title
ROLE_FILESYSTEM_EDITOR Can Be Used To Escalate To ROLE_ADMIN
Summary
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 is to upgrade to Meridian 2023.1.5 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter for reporting this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 17:47 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2023.0.0 , < 2023.1.5
(maven)
Unknown: 0 , < 2023.0.0 (maven) |
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CVE-2023-40313 (GCVE-0-2023-40313)
Vulnerability from cvelistv5 – Published: 2023-08-17 18:24 – Updated: 2024-10-08 13:04
VLAI
EPSS
VEX
Title
Disable BeanShell Interpreter Remote Server Mode
Summary
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 Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-08 12:59 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
29.0.4 , < 32.0.2
(maven)
Unknown: 0 , < 29.0.4 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
|
| opennms | horizon |
Affected:
29.0.4 , < 32.0.2
(maven)
Unknown: 0 , < 29.0.4 (maven) cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:* |
|
| opennms | meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:* |
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CVE-2023-40312 (GCVE-0-2023-40312)
Vulnerability from cvelistv5 – Published: 2023-08-14 17:35 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Reflected XSS in multiple JSP files in opennms/opennms
Summary
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 payload. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Jordi Miralles Comins for reporting this issue.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-27 21:49 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-40311 (GCVE-0-2023-40311)
Vulnerability from cvelistv5 – Published: 2023-08-14 17:31 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Stored XSS in multiple JSP files in opennms/opennms
Summary
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 load on JSPs or Angular templates. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Jordi Miralles Comins for reporting this issue.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-27 21:49 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
Unknown: 0 , < 31.0.8 (maven) |
|
| The OpenNMS Group | Meridian |
Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-0872 (GCVE-0-2023-0872)
Vulnerability from cvelistv5 – Published: 2023-08-14 17:21 – Updated: 2024-10-03 20:25
VLAI
EPSS
VEX
Title
ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users
Summary
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, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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.
OpenNMS thanks Erik Wynter for reporting this issue.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-03 20:25 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
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|
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Affected:
2020.0.0 , ≤ 2020.1.37
(maven)
Affected: 2021.0.0 , ≤ 2021.1.29 (maven) Affected: 2022.0.0 , ≤ 2022.1.18 (maven) Affected: 2023.0.0 , ≤ 2023.1.5 (maven) |
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CVE-2023-0871 (GCVE-0-2023-0871)
Vulnerability from cvelistv5 – Published: 2023-08-11 16:13 – Updated: 2024-10-01 19:13
VLAI
EPSS
VEX
Title
An XML External Entity injection vulnerability
Summary
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 to make arbitrary HTTP requests to internal and external services. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 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. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 19:06 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
Impacted products
2 products
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|---|---|---|---|
| The OpenNMS Group | Horizon |
Affected:
31.0.8 , < 32.0.2
(maven)
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|
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Affected:
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(maven)
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