{"schemaVersion":3,"id":"CVE-2026-4370","aliases":["GHSA-gvrj-cjch-728p","GO-2026-5405"],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the internal Dqlite database cluster fails to perform proper TLS client and server authentication. Specifically, the Juju controller's database endpoint does not validate client certificates when a new node attempts to join the cluster. An unauthenticated attacker with network reachability to the Juju controller's Dqlite port can exploit this flaw to join the database cluster. 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