Proxy Pattern Flaws

Architecture

Proxy pattern flaws in decentralized finance manifest when the underlying logic of a smart contract implementation diverges from the proxy layer, creating a decoupling between transaction execution and state storage. These vulnerabilities often emerge during contract upgrades where storage layout collisions occur, causing unintended overwrites of critical financial variables. Sophisticated attackers exploit this architectural mismatch to manipulate the proxy’s delegation logic, effectively bypassing security constraints embedded in the intended logic.