This study investigates financial stability risks associated with leveraged staking activities in decentralized finance (DeFi) systems, particularly focusing on liquid staking, restaking, and liquid restaking. Market participants can have opportunities to maximize their staking rewards while engaging in additional leveraged staking activities, but leveraged staking activities introduce vulnerabilities akin to those observed in traditional finance. In addition, such activities introduce vulnerabilities unique in DeFi, leading unprecedented financial stability risks to propagate within financial systems. This paper identifies and categorizes vulnerabilities within protocols that offer opportunities for such leveraged staking activities. It examines how risks propagate through interconnected DeFi systems using historical cases, including the Terra/Luna and FTX collapses. The analysis culminates in a generalized framework illustrating how risks propagate through vulnerabilities when a shock occurs. The study underscores the need for quantitative risk assessment based on the framework, prioritization of critical risks, and risk mitigation approaches to enhance resilience in DeFi systems.