How severe is CVE-2022-0759?

CVE-2022-0759 has a CVSS score of 8.1/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-0759?

CVE-2022-0759 affects the following packages: kubeclient (RubyGems). Ecosystems affected: RubyGems.

How do I fix CVE-2022-0759?

Update kubeclient to 4.9.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0759 is resolved across your whole dependency graph.

How do I detect CVE-2022-0759 in my RubyGems dependencies?

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

How do I mitigate CVE-2022-0759 if there is no patch (or I can't update yet)?

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.

Is CVE-2022-0759 actively exploited in the wild?

No public exploit code has been indexed for CVE-2022-0759 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 CVE-2022-0759?

CVE-2022-0759 has an EPSS (Exploit Prediction Scoring System) score of 0.9%, placing it in the 61th 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 CVE-2022-0759?

CVE-2022-0759 is classified as CWE-295 (CWE-295). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2022-0759 published, and has it been updated?

CVE-2022-0759 was published on March 25, 2022 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎

💎 RubyGems

Not in CISA KEV

HIGH severity

CVE-2022-0759 — kubeclient

HIGHFix: ManageIQ/kubeclient#556

CVE-2022-0759 is a high-severity (CVSS 8.1) CWE-295 vulnerability in kubeclient. A fix is available for kubeclient — see the affected versions and patch details below.

Improper Certificate Validation in kubeclient

Also known asGHSA-69p3-xp37-f692

Published

Mar 25, 2022

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.9%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs61th percentile — riskier than 61% 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

1 pkg affected

💎kubeclient

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

A flaw was found in all versions of kubeclient up to (but not including) v4.9.3, the Ruby client for Kubernetes REST API, in the way it parsed kubeconfig files. When the kubeconfig file does not configure custom CA to verify certs, kubeclient ends up accepting any certificate (it wrongly returns VERIFY_NONE). Ruby applications that leverage kubeclient to parse kubeconfig files are susceptible to Man-in-the-middle attacks (MITM).

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`kubeclient`	all versions	4.9.3`bundle update kubeclient --conservative`

Affected Products

1 product · 1 configurations

Application

kubeclientredhat

< 4.9.3

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for kubeclient, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update kubeclient to 4.9.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0759 is resolved across your whole dependency graph.
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.

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 HatImportant

Product	Fixed in	Advisory
Logging subsystem for Red Hat OpenShift 5.4	`openshift-logging/fluentd-rhel8:v1.14.5-3`	RHSA-2022:1461
OpenShift Logging 5.2	`openshift-logging/fluentd-rhel8:v1.7.4-176`	RHSA-2022:2218
OpenShift Logging 5.3	`openshift-logging/fluentd-rhel8:v1.7.4-178`	RHSA-2022:2217
Red Hat Satellite 6.14 for RHEL 8	`tfm-rubygem-kubeclient-0:4.10.1-1.el8sat`	RHSA-2023:6818
RHOL-5.5-RHEL-8	`openshift-logging/fluentd-rhel8:v1.14.6-29`	RHSA-2022:6051

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2022-0759 in your dependencies?

Find it across RubyGems, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

8.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-295CWE-295

Weaponization

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

Timeline

Disclosed

Mar 25, 2022

Last updated

Oct 28, 2026

Identifiers

CVE-2022-0759

GHSA-69p3-xp37-f692

References

Advisorygithub.com · CVE 2022 0759.json Advisorynvd.nist.gov · CVE 2022 0759 Reportgithub.com Reportgithub.com Webgithub.com Webgithub.com · 109ea71de5a8881748f03ebbe103b49f0f1c7887 Webgithub.com · CVE 2022 0759.yml Packagegithub.com · kubeclient

Related vulnerabilities

This CVE is high severity; 6 of 8 other CVEs with CWE-295 are rated as high or higher (top: critical).

CVE-2026-118780CVE-2026-119190GHSA-5xjx-3w67-w9x9CVE-2026-109383GHSA-6q48-6c7w-9gw2GHSA-hq85-5cpj-mr62CVE-2026-70194CVE-2026-96222Browse all CWE-295

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2022-0759 — kubeclient

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 CVE-2022-0759 in your dependencies?