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MEDIUM severity

CVE-2024-37389 — nifi-web-ui

MEDIUMFix: apache/nifi#8938

CVE-2024-37389 is a medium-severity (CVSS 4.6) Cross-site Scripting (XSS) vulnerability in org.apache.nifi:nifi-web-ui. EPSS puts its 30-day exploitation probability at 24.0% (98th percentile). A fix is available for org.apache.nifi:nifi-web-ui — see the affected versions and patch details below.

Apache NiFi: Improper Neutralization of Input in Parameter Context Description

Also known asGHSA-h658-qqv9-qwv8
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Oct 29, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-37389.

EPSS Exploitation Probability

via FIRST.org ↗
24.0%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
0.00%10.3%20.6%30.9%1.3%24.0%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
☕org.apache.nifi:nifi-web-ui☕org.apache.nifi:nifi-web-ui

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

Apache NiFi 1.10.0 through 1.26.0 and 2.0.0-M1 through 2.0.0-M3 support a description field in the Parameter Context configuration that is vulnerable to cross-site scripting. An authenticated user, authorized to configure a Parameter Context, can enter arbitrary JavaScript code, which the client browser will execute within the session context of the authenticated user. Upgrading to Apache NiFi 1.27.0 or 2.0.0-M4 is the recommended mitigation.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.nifi:nifi-web-ui≥ 1.10.0&&< 1.27.01.27.0org.apache.nifi:nifi-web-ui:1.27.0
☕Mavenorg.apache.nifi:nifi-web-ui≥ 2.0.0-M1&&< 2.0.0-M42.0.0-M4org.apache.nifi:nifi-web-ui:2.0.0-M4

Affected Products

1 product · 15 configurations
Application
nifiapache
≥ 1.10.0 && < 1.27.0
1 version
2.0.0

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.apache.nifi:nifi-web-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.nifi:nifi-web-ui to 1.27.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-37389 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Apache NiFi 1.10.0 through 1.26.0 and 2.0.0-M1 through 2.0.0-M3 support a description field in the Parameter Context configuration that is vulnerable to cross-site scripting. An authenticated user, authorized to configure a Parameter Context, can enter arbitrary JavaScript code, which the client browser will execute within the session context of the authenticated user. Upgrading to Apache NiFi 1.27.0 or 2.0.0-M4 is the recommended mitigation.
O3 Security · Impact-Aware SCA

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CVE-2024-37389: nifi-web-ui XSS — Fixed in 1.27.0