mediumLogic errorEVM-Solidity
Notional Exponent: Rounding discrepancy between `MorphoLendingRouter::healthFactor` and `Morpho::repay` causes position migration failures
- Payout
- $0
- Protocol
- Notional Exponent
- Disclosed
- Jul 18, 2025
- Source
- sherlock
Notional Exponent's MorphoLendingRouter computes a borrower's outstanding debt with integer division that rounds down, while Morpho Blue's internal repayment and health-check logic converts borrow shares to assets using round-up. During a position migration, t …
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