Cross-site Scripting in OpenNMS Horizon
In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to Stored Cross-Site Scripting, since the function validateFormInput() performs improper validation checks on the input sent to the groupName and groupComment parameters. Due to this flaw, an authenticated attacker could inject arbitrary script and trick other admin users into downloading malicious files which can cause severe damage to the organization using opennms.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.opennms:opennms | >= 1.0.0, < 27.1.1 | 27.1.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-25933
- https://github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01%2C
- https://github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01,
- https://github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c
- https://github.com/OpenNMS/opennms/commit/f3ebfa3da5352b4d57f238b54c6db315ad99f10e
- https://github.com/OpenNMS/opennms
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Java / Kotlin (Maven)
- Package
org.opennms:opennms- Disclosed
- 25.05.2021
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-jjhw-5mxp-2g2q - CC BY 4.0
Vulnerability history: org.opennms:opennms
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 9
- First → latest
- 05.2021 02.2023
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 7
Disclosures per year
- 2021: 4
- 2022: 2
- 2023: 3
- 2024: 0
- 2025: 0
- 2026: 0
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Cross-site Scripting in OpenNMS Horizon this entry
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