kube-hunter

kube-hunter is an open-source tool from Aqua Security that hunts for security weaknesses in Kubernetes clusters. It can run from outside the cluster (remote scanning), from a machine inside the network, or as a pod within the cluster itself to simulate different attacker perspectives. kube-hunter checks for a wide range of vulnerabilities including exposed API servers, kubelet API access, etcd access, privilege escalation paths, container escape vectors, and misconfigurations in RBAC, network policies, and pod security. Each finding includes a severity rating, description, and remediation guidance. The tool generates reports in JSON, YAML, or human-readable formats, making it easy to integrate into CI/CD pipelines or compliance workflows. kube-hunter is particularly valuable for security teams validating the hardening of their Kubernetes deployments.