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Vulnerability record · CVE-2025-66404 · published 3 December 2025

CVE-2025-66404: Suyogs mcp-server-kubernetes command injection vulnerability

SSuyogs · Mcp Server Kubernetes

MCP Server Kubernetes is an MCP Server that can connect to a Kubernetes cluster and manage it. Prior to 2.9.8, there is a security issue exists in the exec_in_pod tool of the mcp-server-kubernetes MCP Server. The tool accepts user-provided commands in both array and string formats. When a string format is provided, it is passed directly to shell interpretation (sh -c) without input validation, allowing shell metacharacters to be interpreted. This vulnerability can be exploited through direct command injection or indirect prompt injection attacks, where AI agents may execute commands without explicit user intent. This vulnerability is fixed in 2.9.8.

8.8 CVSS 3.1 High EPSS 1.5% · top 27.1% CWE-77 · Command injection
8.8CVSS 3.1 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

MCP Server Kubernetes is an MCP Server that can connect to a Kubernetes cluster and manage it. Prior to 2.9.8, there is a security issue exists in the exec_in_pod tool of the mcp-server-kubernetes MCP Server. The tool accepts user-provided commands in both array and string formats. When a string format is provided, it is passed directly to shell interpretation (sh -c) without input validation, allowing shell metacharacters to be interpreted. This vulnerability can be exploited through direct command injection or indirect prompt injection attacks, where AI agents may execute commands without explicit user intent. This vulnerability is fixed in 2.9.8.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Flux159/mcp-server-kubernetes/commit/d091107ff92d9ffad1b3c295092f142d6578c48b Patch
https://github.com/Flux159/mcp-server-kubernetes/security/advisories/GHSA-wvxp-jp4w-w8wg ExploitVendor Advisory
https://github.com/Flux159/mcp-server-kubernetes/security/advisories/GHSA-wvxp-jp4w-w8wg ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-66404), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.