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MEDIUM severity

GHSA-7v39-jjj6-j4j4 — opennms-web-api

MEDIUMFix: OpenNMS/opennms#5734

GHSA-7v39-jjj6-j4j4 is a medium-severity (CVSS 6.1) vulnerability in org.opennms:opennms-web-api. No vendor fix is recorded yet; mitigation options are listed below.

Cross Site Scripting in OpenNMS

Also known asCVE-2023-0869
Published
Feb 23, 2023
Updated
Nov 8, 2023
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Sep 24, 2026 · OSV.dev, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-7v39-jjj6-j4j4 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected
☕org.opennms:opennms-web-api

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Cross-site scripting in outage/list.htm in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenorg.opennms:opennms-web-apiall versionsNo fix

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.opennms:opennms-web-api, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    No patched version of org.opennms:opennms-web-api has shipped for GHSA-7v39-jjj6-j4j4 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-7v39-jjj6-j4j4 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-7v39-jjj6-j4j4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Cross-site scripting in outage/list.htm in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information.
O3 Security · Impact-Aware SCA

Is GHSA-7v39-jjj6-j4j4 in your dependencies?

O3 Security finds GHSA-7v39-jjj6-j4j4 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-7v39-jjj6-j4j4: XSS (Medium 6.1) | O3 Security