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 Horizon 31.0.4. 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.
CVE-2023-0868
This medium-severity CVE scores 6.7 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 33% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.7
- EG Score
- 6.7(medium)
- EPSS
- 35.6%
- KEV
- Not listed
Published
February 23, 2023
Last Modified
November 21, 2024
References (4)
- security@opennmshttps://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13
- security@opennmshttps://github.com/OpenNMS/opennms/pull/5740
- af854a3a-2127-422b-91ae-364da2661108https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13
- af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenNMS/opennms/pull/5740
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.opennms:opennms-webapp | — | 31.0.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:44 UTCEPSS rescore
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- 2026-05-25 06:16 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-20
Frequently asked(5)
What is CVE-2023-0868?
When was CVE-2023-0868 disclosed?
Is CVE-2023-0868 actively exploited?
What is the CVSS score of CVE-2023-0868?
How do I remediate CVE-2023-0868?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-0868
Is Your Infrastructure Affected by CVE-2023-0868?
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