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What is this endpoint?
etcd/v2/stats/leader
etcd Leader Statistics
What an attacker could do
Leader stats disclose cluster membership and the etcd version, and an unauthenticated etcd holds Kubernetes and application secrets that an attacker can read or overwrite to seize the cluster.
How to defend it
Enable client and peer TLS with certificate authentication, bind etcd to private interfaces only, and never expose it directly to untrusted networks.
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Want to dive deeper into this topic? Check out the official documentation.
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