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MEDIUM severity

CVE-2024-45477 — nifi-web-ui

MEDIUMFix: apache/nifi#9195

CVE-2024-45477 is a medium-severity (CVSS 4.6) Cross-site Scripting (XSS) vulnerability in org.apache.nifi:nifi-web-ui. 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 Description

Also known asBIT-nifi-2024-45477GHSA-7mqj-xgf8-p59v
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Oct 27, 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-2024-45477.

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk+0.04%
Lower risk than most CVEs55th percentile — riskier than 55% of all scored CVEsHighest risk
0.15%0.70%1.25%1.80%1.3%0.7%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 1.27.0 and 2.0.0-M1 through 2.0.0-M3 support a description field for Parameters in a 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 1.28.0 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&&< 1.28.01.28.0org.apache.nifi:nifi-web-ui:1.28.0
☕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 · 4 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 1.28.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-45477 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 1.27.0 and 2.0.0-M1 through 2.0.0-M3 support a description field for Parameters in a 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 1.28.0 or 2.0.0-M4 is the recommended mitigation.
O3 Security · Impact-Aware SCA

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CVE-2024-45477: nifi-web-ui XSS — Fixed in 1.28.0