Collateral Receipt Token Vulnerability

Collateral receipt token vulnerability refers to the risk associated with tokens that represent a claim on deposited assets in a lending protocol. These tokens are often used as collateral in other protocols, effectively doubling the leverage on the underlying asset.

If the lending protocol is compromised or if the underlying asset price drops significantly, the receipt token can lose its value or liquidity. This creates a ripple effect where other protocols holding the receipt token as collateral face insolvency.

Protecting against this requires strict limits on which receipt tokens can be used as collateral and rigorous security audits. It is a major concern for the composability of DeFi.