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☕ Maven
Not in CISA KEV
HIGH severity

CVE-2020-10721 — fabric8-maven-plugin

HIGH

CVE-2020-10721 is a high-severity (CVSS 7.8) Deserialization of Untrusted Data vulnerability in io.fabric8:fabric8-maven-plugin. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

fabric8-maven-plugin: insecure way to construct Yaml Object leading to remote code execution

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs48th percentile — riskier than 48% of all scored CVEsHighest risk
0.00%0.36%0.72%1.08%0.1%0.6%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
☕io.fabric8:fabric8-maven-plugin

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 flaw was found in the fabric8-maven-plugin 4.0.0 and later. When using a wildfly-swarm or thorntail custom configuration, a malicious YAML configuration file on the local machine executing the maven plug-in could allow for deserialization of untrusted data resulting in arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

The fabric8-maven-plugin has been superseded by the Eclipse project JKube and the recommendation is migrating users of the fabric8-maven-plugin to Eclipse Jkube >= 1.0.0

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenio.fabric8:fabric8-maven-plugin≥ 4.0.0-M1No fix

Affected Products

1 product · 1 configurations
Application
fabric8-mavenredhat
≥ 4.0.0 && ≤ 4.4.1
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 io.fabric8:fabric8-maven-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of io.fabric8:fabric8-maven-plugin for CVE-2020-10721. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

A flaw was found in the fabric8-maven-plugin 4.0.0 and later. When using a wildfly-swarm or thorntail custom configuration, a malicious YAML configuration file on the local machine executing the maven plug-in could allow for deserialization of untrusted data resulting in arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. The fabric8-maven-plugin has been superseded by the Eclipse project JKube and the recommendation is migrating users of the fabric8-maven-plugin to Eclipse Jkube >= 1.0.0
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CVE-2020-10721: fabric8-maven-plugin RCE (High 7.8)