CVE-2025-66404 MEDIUM

CVE-2025-66404: mcp-server-kubernetes potential security issue in exec_in_pod tool

Vendor Flux159
Product mcp-server-kubernetes
Weakness CWE-77
Published December 3, 2025
Last update December 3, 2025
View on NVD All CVEs

CVSS base score

6.4/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 3, 2025 CVE published
December 3, 2025 Record updated