TechFlow News — The DAO behind USN, a NEAR-native stablecoin, Decentral Bank, has fixed a critical vulnerability in the USN contract. The flaw occurred when users attempted to exchange USN for USDT via Decentral Bank: if the user’s wallet held no USDT, the transaction would fail, and due to an accounting error during the refund process, the refunded amount of USN was inflated by one trillion times. One user attempting to swap 5 USN for USDT received nearly 10 trillion USN in refunds after two tries, exploiting the bug. Decentral Bank has since deployed a fix and burned the excess USN tokens. (TheBlock)
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