CVE-2025-66404CWE-77

mcp-server-kubernetes potential security issue in exec_in_pod tool

Medium · published December 3, 2025

CVSS v3.1
6.4
EPSS
1%
Percentile
73.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01480 · 73.7th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2025-12-03T20:40Z
EPSS history
Timeline
  • 03 DEC 20:40Z
    mcp-server-kubernetes potential security issue in exec_in_pod tool
    cvelistv5