CVE-2026-48106 Arc Enterprise cluster replication accepts unauthenticated MsgReplicateSync messages, enabling cluster-wide data injection from any TLS-trusted peer

Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's cluster replication receiver at internal/cluster/replication/receiver.go validates only the wire-format envelope length, opcode of inbound messages. The MsgReplicateSync payload itself is...

CVE-2026-48106

Arc Enterprise (an open, SQL-native time-series database for telemetry) prior to version 2026.06.1 has a vulnerability in its cluster replication receiver (internal/cluster/replication/receiver.go). The MsgReplicateSync payload is accepted without any application-layer authentication — no HMAC, s...