XRP Ledger's design blocks the flash loan attacks costing DeFi hundreds of millions
Recent DeFi exploits highlight a major attack pattern: flash loans. These allow uncollateralized borrowing inside one atomic transaction, enabling attackers to manipulate prices or drain pools and repay before settlement, risking only gas fees. Cross-chain bridges and other DeFi protocols have lost billions to such attacks since 2021. XRPL is designed to make this attack class impossible. A draft amendment for concentrated liquidity and StableSwap-style AMM pools states that flash loan attacks cannot occur because XRPL transactions are atomic but do not support composable intra-transaction calls. That prevents the multi-step borrow-manipulate-repay sequence flash loan exploits require. This security comes with tradeoffs. XRPL currently forgoes flash-loan-powered DeFi features such as arbitrage, liquidation bots, and capital-efficient collateral swaps. But XRPL’s DeFi and tokenized real-world assets are growing fast, with over $3 billion in tokenized assets on-chain. If the AMM proposal passes, XRPL could gain broader DeFi utility while preserving a structural defense against flash loan exploits.
