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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Flux159 mcp-server-kubernetes
Default version status: unaffected
0 to < 3.9.0affected
pkg:npm/mcp-server-kubernetesReferences
- 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 ↗