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

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 as a way to organize funds), the engine fails to resolve the pocket's parent account before checking the spending policy. Because pockets are "virtual" addresses that exist only as entries in the pocket_to_parent map and do not have their own SmartAccountConfig entries, the check_spending_policy method defaults to an "authorized/no policy" result. This allow any user (or attacker in possession of a parent key) to instantly drain every pocket on an account, even if the parent account has a strict 24-hour vault delay or a 1 UDAG daily limit. This issue has been patched via commit fb6ef59.

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访问控制不恰当

UltraDAG 访问控制错误漏洞

UltraDAG是UltraDAGcom个人开发者的一个轻量级物联网区块链。 UltraDAG commit fb6ef59之前版本存在访问控制错误漏洞，该漏洞源于SmartTransferTx实现中的策略执行管道存在逻辑缺陷，未能解析口袋的父账户即检查支出策略，可能导致攻击者耗尽账户中的所有口袋。

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