CVE-2026-84700 Pika Unauthenticated Replication Access via Internal Protobuf Port

PikiwiDB Pika v3.5.7 exposes an internal protobuf replication server on a port derived from the client port plus 2000 e.g. 11221 when the default client port 9221 is used that does not authenticate incoming requests. Although requirepass is intended to gate replication — a slave presents it as...