Vulnerabilities in pkg:pypi/mcp-server-kubernetes
PACKAGECVE-2026-61459 is a CRITICAL (CVSS 9.8) mcp-server-kubernetes argument injection can expose vulnerability (CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')) affecting Mcp server kubernetes libraries in the PyPI ecosystem. The issue involves mcp-server-kubernetes argument injection can expose kubernetes cluster credentials. Remediation is available by upgrading affected packages to version 3.9.0.
pkg:pypi/mcp-server-kubernetes
Vulnerability advisories affecting package pkg:pypi/mcp-server-kubernetes. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-wmg3-h8mf-wgvr | CVE-2026-61459 | CRITICAL | mcp-server-kubernetes argument injection can expose Kubernetes cluster credentials |
CVE-2026-61459 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-61459
To remediate this vulnerability, upgrade all affected Mcp server kubernetes dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
pip install mcp-server-kubernetes>=3.9.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
pip show mcp-server-kubernetesHow to Check if You Are Affected
To determine whether your Python environment is affected by CVE-2026-61459, inspect your installed packages using pip:
pip show mcp-server-kubernetesAnalyze the terminal output to locate any version of Mcp server kubernetes in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.9.0), your application is affected.
Note: The pip show mcp-server-kubernetes command checks currently installed packages in your active Python environment.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), where the product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. In Mcp server kubernetes, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-61459 Affected Mcp server kubernetes Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
mcp-server-kubernetes
|
PyPI |
< 3.9.0
|
3.9.0
|
References
Frequently Asked Questions
What is CVE-2026-61459?
Which Mcp server kubernetes versions are affected?
What version fixes CVE-2026-61459?
Is mcp-server-kubernetes affected?
What is the CVSS score of CVE-2026-61459?
What CWE is associated with CVE-2026-61459?
How can I check PyPI dependencies for CVE-2026-61459?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wmg3-h8mf-wgvr",
"modified" : "2026-08-12T19:26:54Z",
"published" : "2026-07-10T21:32:32Z",
"aliases" : [ "CVE-2026-61459" ],
"summary" : "mcp-server-kubernetes argument injection can expose Kubernetes cluster credentials",
"details" : "MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools (kubectl_get, kubectl_describe, kubectl_delete) that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can inject the --server flag to redirect kubectl commands to an attacker-controlled API server, causing the operator's bearer token to be transmitted externally and enabling full cluster compromise.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "PyPI",
"name" : "mcp-server-kubernetes"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "3.9.0"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-61459"
}, {
"type" : "WEB",
"url" : "https://github.com/Flux159/mcp-server-kubernetes/issues/328"
}, {
"type" : "WEB",
"url" : "https://github.com/Flux159/mcp-server-kubernetes/pull/329"
}, {
"type" : "WEB",
"url" : "https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/Flux159/mcp-server-kubernetes"
}, {
"type" : "WEB",
"url" : "https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0"
}, {
"type" : "WEB",
"url" : "https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-88" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2026-08-12T19:26:54Z",
"nvd_published_at" : "2026-07-10T19:17:27Z"
}
}