CVE-2026-42278 UltraDAG: Smart Account Spending Policy Bypass via Pockets

UltraDAG is a minimal DAG-BFT blockchain in Rust. Prior to commit fb6ef59, the UltraDAG StateEngine implementation of SmartTransferTx contains a critical logic flaw in its policy enforcement pipeline. When a transaction originates from a "Pocket" a derived sub-address documented in the protocol a...