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Not in CISA KEV
HIGH severity

XXE vulnerability in Jenkins Nested View PluginGHSA-5wc4-w63v-97c3

HIGHFix: jenkinsci/nested-view-plugin@7978729

GHSA-5wc4-w63v-97c3 is a high-severity (CVSS 7.1) XML External Entity (XXE) vulnerability in org.jenkins-ci.plugins:nested-view. A fix is available for org.jenkins-ci.plugins:nested-view — see the affected versions and patch details below.

Also known asCVE-2021-21680
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs71th percentile — riskier than 71% of all scored CVEsHighest risk
0.00%0.61%1.21%1.82%0.2%1.3%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:nested-view

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 Nested View Plugin 1.20 and earlier does not configure its XML transformer to prevent XML external entity (XXE) attacks.

This allows attackers able to configure views to have Jenkins parse a crafted view XML definition that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.

Jenkins Nested View Plugin 1.21 disables external entity resolution for its XML transformer.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:nested-viewall versions1.21org.jenkins-ci.plugins:nested-view:1.21

Affected Products

1 product · 1 configurations
Application
nested viewjenkins
≤ 1.20
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:nested-view, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:nested-view to 1.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5wc4-w63v-97c3 is resolved across your whole dependency graph.

  3. Workarounds

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

Jenkins Nested View Plugin 1.20 and earlier does not configure its XML transformer to prevent XML external entity (XXE) attacks. This allows attackers able to configure views to have Jenkins parse a crafted view XML definition that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. Jenkins Nested View Plugin 1.21 disables external entity resolution for its XML transformer.
O3 Security · Impact-Aware SCA

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XXE vulnerability in Jenkins Nested View Plugin (High 7.1)