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MEDIUM severity

CVE-2023-4303 — fortify

MEDIUMFix: jenkinsci/fortify-plugin@357d7bf

CVE-2023-4303 is a medium-severity (CVSS 4.3) Cross-site Scripting (XSS) vulnerability in org.jenkins-ci.plugins:fortify. A fix is available for org.jenkins-ci.plugins:fortify — see the affected versions and patch details below.

Jenkins Fortify Plugin HTML injection vulnerability

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 10, 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-2023-4303.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs41th percentile — riskier than 41% of all scored CVEsHighest risk
0.00%0.32%0.65%0.97%0.2%0.5%May 26Sep 26Nov 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.jenkins-ci.plugins:fortify

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

Jenkins Fortify Plugin 22.1.38 and earlier does not escape the error message for a form validation method. This results in an HTML injection vulnerability.

Fortify Plugin 22.2.39 removes HTML tags from the error message.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:fortifyall versions22.2.39org.jenkins-ci.plugins:fortify:22.2.39

Affected Products

1 product · 1 configurations
Application
fortifyjenkins
< 22.2.39
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.jenkins-ci.plugins:fortify, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:fortify to 22.2.39 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-4303 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

Jenkins Fortify Plugin 22.1.38 and earlier does not escape the error message for a form validation method. This results in an HTML injection vulnerability. Fortify Plugin 22.2.39 removes HTML tags from the error message.
O3 Security · Impact-Aware SCA

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CVE-2023-4303: fortify — Fixed in 22.2.39