https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-01T20:21:56.324791+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2025-53355 CVE-2025-53355 — mcp-server-kubernetes vulnerable to command injection in several tools 2026-10-01T20:21:57.651694+00:00

Affected: Flux159 mcp-server-kubernetes

MCP Server Kubernetes is an MCP Server that can connect to a Kubernetes cluster and manage it. A command injection vulnerability exists in the mcp-server-kubernetes MCP Server. The vulnerability is caused by the unsanitized use of input parameters within a call to child_process.execSync, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges. This vulnerability is fixed in 2.5.0.

 https://vulnerability.circl.lu/vuln/ghsa-gjv4-ghm7-q58q GHSA-gjv4-ghm7-q58q — MCP Server Kubernetes vulnerable to command injection in several tools 2026-10-01T20:21:57.651848+00:00

Affected: npm: mcp-server-kubernetes

### Summary

A command injection vulnerability exists in the `mcp-server-kubernetes` MCP Server. The vulnerability is caused by the unsanitized use of input parameters within a call to `child_process.execSync`, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges.

The server constructs and executes shell commands using unvalidated user input directly within command-line strings. This introduces the possibility of shell metacharacter injection (`|`, `>`, `&&`, etc.).

### Details

The MCP Server exposes tools (`kubectl_scale`, `kubectl_patch` , `explain_resource`, etc) to perform several kubernetes operations. An MCP Client can be instructed to execute additional actions for example via prompt injection when asked to read pod logs. Below some example of vulnerable code and different ways to test this vulnerability including a real example of indirect prompt injection that can lead to arbitrary command injection.

### Vulnerable code

The following snippet illustrates the vulnerable code pattern used in the MCP Server’s tooling. **Note**: These is only one instance, but similar patterns may exist elsewhere in the codebase.

- `kubectl_scale` tool ```js import { execSync } from "child_process";

// https://github.com/Flux159/mcp-server-kubernetes/blob/v2.4.9/src/tools/kubectl-scale.ts#L44-L52 const namespace = input.namespace || "default"; const resourceType = input.resourceT…