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Critical, CVSS 9.8amended

mcp-kubernetes-server has an OS Command Injection vulnerability

CVE-2025-59377GHSA-4hqq-7q79-932p

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • PyPI mcp-kubernetes-server

    Affected
    <= 0.1.11
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2025-59377: 1.20% estimated exploitation activity in the next 30 days; percentile 68.29 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

feiskyer/mcp-kubernetes-server through 0.1.11 allows OS command injection via the /mcp/kubectl endpoint. The handler constructs a shell command with user-supplied arguments and executes it with subprocess using shell=True, enabling injection through shell metacharacters (e.g., ;, &&, $()), even when the server is running in read-only mode. A remote, unauthenticated attacker can execute arbitrary OS commands on the host, resulting in full compromise of confidentiality, integrity, and availability. This issue is distinct from mcp-server-kubernetes and from CVE-2025-53355.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-4hqq-7q79-932p

  2. Revision 1 · created ·

    Published from osv record GHSA-4hqq-7q79-932p

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-59377

Advisory: mcp-kubernetes-server has an OS Command Injection vulnerability
IDs: CVE-2025-59377, GHSA-4hqq-7q79-932p
Record: https://patchnext.com/advisories/cve-2025-59377 (revision 2, source checked 26 Oct 2026, 13:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI mcp-kubernetes-server: affected <= 0.1.11

## Suggested inspection (read-only)
- `python -m pip show mcp-kubernetes-server`: prints the installed version. Run with the environment that serves production active.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on mcp-kubernetes-server.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-4hqq-7q79-932p (OSV record GHSA-4hqq-7q79-932p lists affected ranges: PyPI mcp-kubernetes-server >=0 <=0.1.11)
- Verified: https://github.com/advisories/GHSA-4hqq-7q79-932p (GitHub-reviewed advisory GHSA-4hqq-7q79-932p lists affected ranges: PyPI mcp-kubernetes-server >=0 <=0.1.11)

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