CVE-2025-59376Public exploitNetwork attack vector

Kubernetes resource modification via chained-command filter bypass

Published Sep 15, 2025 · Updated Sep 15, 2025

Command authorization bypass in feiskyer mcp-kubernetes-server 0.1.11 and earlier allows remote attackers to alter Kubernetes resources. The kubectl tool splits the supplied command on whitespace, checks only the first subcommand against blocked operations, and passes the entire chained string to ShellProcess. Reachability requires an exposed MCP transport, the kubectl tool, a write or delete restriction flag, and cluster credentials permitted to perform the appended operation.

CVSS severity3.7
Low
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command authorization bypass in feiskyer mcp-kubernetes-server 0.1.11 and earlier allows remote attackers to alter Kubernetes resources. The kubectl tool splits the supplied command on whitespace, checks only the first subcommand against blocked operations, and passes the entire chained string to ShellProcess. Reachability requires an exposed MCP transport, the kubectl tool, a write or delete restriction flag, and cluster credentials permitted to perform the appended operation.

The record

CVE
CVE-2025-59376
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
feiskyer
Product
mcp-kubernetes-server
Classifications
CWE-863, CWE-77, T1059.013
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.1.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

feiskyer · mcp-kubernetes-serverversion=0 <=0.1.11

Published CVSS scores

3.7MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.013Command and Scripting Interpreter: Container CLI/API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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