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MEDIUM severity

CVE-2021-33192 — jena-fuseki

MEDIUM

CVE-2021-33192 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.apache.jena:jena-fuseki. A fix is available for org.apache.jena:jena-fuseki — see the affected versions and patch details below.

Cross-site scripting in Apache Jena Fuseki

Also known asGHSA-phwj-86vx-cfjc
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs87th percentile — riskier than 87% of all scored CVEsHighest risk
2.38%2.88%3.38%3.88%3.4%2.9%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

1 pkg affected
☕org.apache.jena:jena-fuseki

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

A vulnerability in the HTML pages of Apache Jena Fuseki allows an attacker to execute arbitrary javascript on certain page views. This issue affects Apache Jena Fuseki from version 2.0.0 to version 4.0.0 (inclusive).

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.jena:jena-fuseki≥ 2.0.0&&< 4.1.04.1.0org.apache.jena:jena-fuseki:4.1.0

Affected Products

1 product · 1 configurations
Application
jena fusekiapache
≥ 2.0.0 && < 4.1.0
range

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.jena:jena-fuseki, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.jena:jena-fuseki to 4.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-33192 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

A vulnerability in the HTML pages of Apache Jena Fuseki allows an attacker to execute arbitrary javascript on certain page views. This issue affects Apache Jena Fuseki from version 2.0.0 to version 4.0.0 (inclusive).
O3 Security · Impact-Aware SCA

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CVE-2021-33192: jena-fuseki — Fixed in 4.1.0