CVE-2026-61459

CRITICAL9.8

MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools

Published Jul 10, 2026

Modified 5 days ago

Details

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.

References

FIX

https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a

DETECTION

https://github.com/Flux159/mcp-server-kubernetes/issues/328

WEB

https://github.com/Flux159/mcp-server-kubernetes/pull/329

WEB

https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-61459

ADVISORY