How severe is GHSA-98g7-rxmf-rrxm?

GHSA-98g7-rxmf-rrxm has a CVSS score of 6.7/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-98g7-rxmf-rrxm?

GHSA-98g7-rxmf-rrxm affects the following packages: io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven), io.fabric8:kubernetes-client (Maven). Ecosystems affected: Maven.

How do I fix GHSA-98g7-rxmf-rrxm?

Update io.fabric8:kubernetes-client to 5.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-98g7-rxmf-rrxm is resolved across your whole dependency graph.

How do I detect GHSA-98g7-rxmf-rrxm in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.fabric8:kubernetes-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-98g7-rxmf-rrxm if there is no patch (or I can't update yet)?

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.

Is GHSA-98g7-rxmf-rrxm actively exploited in the wild?

No public exploit code has been indexed for GHSA-98g7-rxmf-rrxm yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-98g7-rxmf-rrxm?

GHSA-98g7-rxmf-rrxm has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 27th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-98g7-rxmf-rrxm?

GHSA-98g7-rxmf-rrxm is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-98g7-rxmf-rrxm published, and has it been updated?

GHSA-98g7-rxmf-rrxm was published on July 15, 2022 and was last updated on July 8, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

fabric8 kubernetes-client vulnerableGHSA-98g7-rxmf-rrxm

MEDIUMFix: fabric8io/kubernetes-client@4451030

GHSA-98g7-rxmf-rrxm is a medium-severity (CVSS 6.7) Deserialization of Untrusted Data vulnerability in io.fabric8:kubernetes-client. A fix is available for io.fabric8:kubernetes-client — see the affected versions and patch details below.

Also known asCVE-2021-4178

Published

Jul 15, 2022

Updated

Jul 8, 2026

Affected

7 pkgs

Patched

7 / 7

Exploits

None indexed

Exploitation data as of Nov 5, 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 CVEs27th percentile — riskier than 27% of all scored CVEsHighest risk

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

7 pkgs affected

☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client☕io.fabric8:kubernetes-client

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 arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.

Affected Packages

7 total 7 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.0.0-beta-1&&< 5.0.3	5.0.3`io.fabric8:kubernetes-client:5.0.3`
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.1.0&&< 5.1.2	5.1.2`io.fabric8:kubernetes-client:5.1.2`
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.2.0&&< 5.3.2	5.3.2`io.fabric8:kubernetes-client:5.3.2`
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.5.0&&< 5.7.4	5.7.4`io.fabric8:kubernetes-client:5.7.4`
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.8.0&&< 5.8.1	5.8.1`io.fabric8:kubernetes-client:5.8.1`
☕Maven	`io.fabric8:kubernetes-client`	≥ 5.9.0&&< 5.10.2	5.10.2`io.fabric8:kubernetes-client:5.10.2`

Affected Products

9 products · 16 configurations

Application

a-mq streamsredhat

1 version

2.0.1

Application

build of quarkusredhat

1 version

2.2.5

Application

descision managerredhat

1 version

7.0

Application

fabric8-kubernetesredhat

≥ 5.11.0 && < 5.11.2

2 versions

5.0.05.8.0

Application

fuseredhat

1 version

7.11

Application

integration camel kredhat

all

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.fabric8:kubernetes-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update io.fabric8:kubernetes-client to 5.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-98g7-rxmf-rrxm is resolved across your whole dependency graph.
Workarounds
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.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

Red Hat CodeReady Studio 12 is not affected by this flaw because it does not ship a vulnerable version of kubernetes-client; the version that it ships does not use SnakeYAML.

Product	Fixed in	Advisory
OCP-Tools-4.13-RHEL-8	`jenkins-2-plugins-0:4.13.1684911916-1.el8`	RHSA-2023:3299
Red Hat AMQ Streams 1.6.7	see advisory	RHSA-2022:0467
Red Hat AMQ Streams 2.0.1	`kubernetes-client`	RHSA-2022:0469
Red Hat build of Quarkus 2.2.5	`kubernetes-client`	RHSA-2022:0589
Red Hat Fuse 7.11	`kubernetes-client`	RHSA-2022:5532
RHINT Camel-Q 2.2.1	see advisory	RHSA-2022:1013
Text-Only RHOAR	`kubernetes-client`	RHSA-2022:8761

Frequently Asked Questions

fabric8 Kubernetes client had an arbitrary code execution flaw in versions 5.0.0-beta-1 and higher. Attackers could potentially insert malicious YAMLs due to misconfigured YAML parsing.

O3 Security · Impact-Aware SCA

Is GHSA-98g7-rxmf-rrxm in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.7/10CVSS v3 base

Vector breakdown

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-502Deserialization of Untrusted Data

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jul 15, 2022

Last updated

Jul 8, 2026

Identifiers

GHSA-98g7-rxmf-rrxm

References

Advisorynvd.nist.gov · CVE 2021 4178 Webgithub.com Webgithub.com · 445103004d1ed3153d5abb272473451d05891e39 Webaccess.redhat.com · cve 2021 4178 Webbugzilla.redhat.com · show bug.cgi Webmend.io · CVE 2021 4178 Packagegithub.com · kubernetes client

Related vulnerabilities

Also affects kubernetes-client

This CVE is medium severity; 2 of 2 other CVEs affecting kubernetes-client are rated as high or higher (top: high).

CVE-2021-4178CVE-2021-20218

Same weakness: CWE-502

This CVE is medium severity; 6 of 6 other CVEs with CWE-502 are rated as high or higher (top: high).

CVE-2026-115878CVE-2026-62848CVE-2026-115912CVE-2026-116580CVE-2026-114608CVE-2026-102554Browse all CWE-502

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedJul 8, 2026

fabric8 kubernetes-client vulnerableGHSA-98g7-rxmf-rrxm

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is GHSA-98g7-rxmf-rrxm in your dependencies?