CVE-2021-25933 json
Cross-site Scripting in OpenNMS Horizon
published 2021-05-20 5 y ago modified 2026-06-17 4 mo ago also GHSA-jjhw-5mxp-2g2q , EUVD-2021-1118
- cvss
- 4.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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 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.
Patch / fix
- maven org.opennms:opennms 27.1.1
- opennms horizon 27.1.1
- opennms meridian 2019.1.19, 2020.1.7
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- whitesourcesoftware.com https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.opennms:opennms | >=1.0.0, <27.1.1 |
27.1.1 |
Affected products
- n/a OpenNMS
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c
web, patch, third-party-advisory
-
github.com
/OpenNMS/opennms/commit/f3ebfa3da5352b4d57f238b54c6db315ad99f10e
web, patch, third-party-advisory
-
github.com
/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01%2C
web
-
github.com
/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01,
web
-
whitesourcesoftware.com
/vulnerability-database/CVE-2021-25933
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-25933
advisory
-
github.com
/OpenNMS/opennms
package
Sources
- CVE List CVE-2021-25933
- GitHub Advisory GHSA-jjhw-5mxp-2g2q
- NVD CVE-2021-25933
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