CVE-2026-59818 | etcd-io etcd up to 3.5.31/3.6.12 gRPC Client Authentication certificate validation

A vulnerability categorized as problematic has been discovered in etcd-io etcd up to 3.5.31/3.6.12. The impacted element is an unknown function of the component gRPC Client Authentication Handler. Executing a manipulation can lead to improper certificate validation.

This vulnerability appears as CVE-2026-59818. The attack may be performed from remote. There is no available exploit.