Vulnerability in mcp-server-kubernetes (CVE-2026-61459)
Summary
Vulnerability in mcp-server-kubernetes (CVE-2026-61459). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 3.9.0 or later.
Original description
The description as published by the source.
MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools (kubectl_get, kubectl_describe, kubectl_delete) that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can inject the --server flag to redirect kubectl commands to an attacker-controlled API server, causing the operator's bearer token to be transmitted externally and enabling full cluster compromise.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-61459 has been found in mcp-server-kubernetes.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade mcp-server-kubernetes to 3.9.0 or later.
If unsure, ask your IT team or search "mcp-server-kubernetes CVE-2026-61459" on the vendor's site.
CVE-2026-61459 (mcp-server-kubernetes) — CWE-88 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 3.9.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-88) exists in mcp-server-kubernetes.
Check the vendor advisory for the affected versions of mcp-server-kubernetes.
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.
Update to 3.9.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'mcp-server-kubernetes' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'mcp-server-kubernetes' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
mcp-server-kubernetesを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade mcp-server-kubernetes to 3.9.0ステージング環境で 3.9.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory vulncheck.com
- advisory nvd.nist.gov
- advisory github.com
- advisory github.com
- package github.com
- package pypi.org
- patch github.com
- report github.com
- report github.com