---
cve: "CVE-2026-61459"
severity: "CRITICAL"
cvss: 9.3
epss: "2.1%"
vendor: "Flux159"
kev: false
exploited: false
published: "2026-07-10 19:17:27"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T18:44:36+02:00"
---

# CVE-2026-61459

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Exploit-Evidenz

- [EDB-52638 — mcp-server-kubernetes 3.8.x - Argument Injection](https://www.exploit-db.com/exploits/52638)

## Patch verfügbar (OSV)

- 874fef739eb5f15bf103c273337d41604458eb01 (Commit)
- d7890f50a4567bf5d9842541ba6f41e180227f9a (Commit)

## Referenzen

- <https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0>
- <https://github.com/Flux159/mcp-server-kubernetes/issues/328>
- <https://github.com/Flux159/mcp-server-kubernetes/pull/329>
- <https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a>
- <https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-61459) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_