Solv Protocol's BRO vault lost $2.7M after an attacker exploited a missing nonReentrant modifier on two callback functions in the BitcoinReserveOffering contract — converting 135 BRO into 567 million BRO via repeated reentrant minting, then swapping for 38 SolvBTC. The contract shipped without an audit; Solv's HackenProof bug bounty excluded the vulnerable EVM contract entirely. Solv has pledged full reimbursement. Source: https://rekt.news/solv-rekt