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MEDIUM severity

CVE-2021-21681 — nomad

MEDIUMFix: jenkinsci/nomad-plugin@d451234

CVE-2021-21681 is a medium-severity (CVSS 5.5) CWE-522 vulnerability in org.jenkins-ci.plugins:nomad. A fix is available for org.jenkins-ci.plugins:nomad — see the affected versions and patch details below.

Password stored in plain text by Jenkins Nomad Plugin

Also known asGHSA-5c2c-cvg6-ghjm
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs23th percentile — riskier than 23% of all scored CVEsHighest risk
0.00%0.27%0.53%0.80%0.0%0.3%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.jenkins-ci.plugins:nomad

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 Nomad Plugin 0.7.4 and earlier stores the passwords to authenticate against the Docker registry unencrypted in the global config.xml file on the Jenkins controller as part of its worker templates configuration.

These passwords can be viewed by users with access to the Jenkins controller file system.

Jenkins Nomad Plugin 0.7.5 stores the Docker passwords encrypted. This change is effective after Jenkins restarts.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:nomadall versions0.7.5org.jenkins-ci.plugins:nomad:0.7.5

Affected Products

1 product · 1 configurations
Application
nomadjenkins
≤ 0.7.4
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:nomad, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:nomad to 0.7.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-21681 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Jenkins Nomad Plugin 0.7.4 and earlier stores the passwords to authenticate against the Docker registry unencrypted in the global `config.xml` file on the Jenkins controller as part of its worker templates configuration. These passwords can be viewed by users with access to the Jenkins controller file system. Jenkins Nomad Plugin 0.7.5 stores the Docker passwords encrypted. This change is effective after Jenkins restarts.
O3 Security · Impact-Aware SCA

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CVE-2021-21681: nomad — Fixed in 0.7.5