Unrated severityNVD Advisory· Published Jul 10, 2026· Updated Jul 14, 2026
MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools
CVE-2026-61459
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.
Affected products
2- Range: <3.9.0
- Range: <3.9.0
Patches
Vulnerability mechanics
References
5- github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9amitrepatch
- github.com/Flux159/mcp-server-kubernetes/issues/328mitreexploittechnical-description
- www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-toolsmitrethird-party-advisory
- github.com/Flux159/mcp-server-kubernetes/pull/329mitreissue-tracking
- github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0mitrerelease-notes
News mentions
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