Open Source Kubectl MCP Server vulnerable to arbitrary code execution via user interaction with crafted HTML page

kubectl-mcp-server (npm), kubectl-mcp-server (pip)

An issue in Open Source Kubectl MCP Server v1.1.1 allows attackers to execute arbitrary code on a victim system via user interaction with a crafted HTML page.

Fix it

npm install kubectl-mcp-server@1.2.0

First seen: 12 May 2026
Last update: 12 May 2026, 18:30 UTC
Fixed in: kubectl-mcp-server 1.2.0
Identifiers: CVE-2025-65719
Source: GitHub advisory
On the menu as: npm packages
PyPI packages
MCP servers

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Open Source Kubectl MCP Server vulnerable to arbitrary code execution via user interaction with crafted HTML page
Severity: critical. Patch status: patched.
Affected: kubectl-mcp-server (npm), kubectl-mcp-server (pip)
Fixed in: kubectl-mcp-server 1.2.0
Ids: CVE-2025-65719

An issue in Open Source Kubectl MCP Server v1.1.1 allows attackers to execute arbitrary code on a victim system via user interaction with a crafted HTML page.

## Steps
1. Search the repo, its CI and infra config for kubectl-mcp-server (npm), kubectl-mcp-server (pip). If present, report the version in use and whether it's affected.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2025-65719") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://github.com/advisories/GHSA-94gr-w3q5-rfqr https://github.com/pypa/advisory-database/tree/main/vulns/kubectl-mcp-server/PYSEC-2026-371.yaml https://nvd.nist.gov/vuln/detail/CVE-2025-65719 https://www.ox.security/blog/cve-2025-65719-critical-rce-in-kubectl-mcp-server https://www.ox.security/blog/kubectl-mcp-server-remote-code-execution
https://pwned.coffee/i/open-source-kubectl-mcp-server-vulnerable-to-arbitrary-c-cve-2025-65719

Sources

Wrong fix version, or a source we missed? Send it back to chef@pwned.coffee with the source, and we'll correct it here.

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