Vulnerability Description
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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Suyogs | Mcp-Server-Kubernetes | < 3.9.0 |
Related Weaknesses (CWE)
References
- https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541Patch
- https://github.com/Flux159/mcp-server-kubernetes/issues/328Issue TrackingExploitMitigation
- https://github.com/Flux159/mcp-server-kubernetes/pull/329Issue TrackingPatch
- https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0Release Notes
- https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-viThird Party Advisory
FAQ
What is CVE-2026-61459?
CVE-2026-61459 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 assertNoDangerou...
How severe is CVE-2026-61459?
CVE-2026-61459 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-61459?
Check the references section above for vendor advisories and patch information. Affected products include: Suyogs Mcp-Server-Kubernetes.