The NovaBox reward pool was attacked, and hackers exploited a vulnerability in the distribution mechanism to steal 56.73 ETH

By: rootdata|2026/06/11 20:45:01

According to Bits.media, the reward pool of the NovaBox platform was hacked on June 9 on Ethereum, resulting in a loss of approximately 56.73 ETH, affecting over 130 deposit users. The attacker drained the pool's funds from 65.11 ETH to 0.09 ETH in a single transaction, accounting for about 99.86%.

Security company F12 stated that the incident was not due to a smart contract vulnerability, but rather a flaw in the reward distribution mechanism. The attacker borrowed 427.5 WETH through an Aave V3 flash loan, exploiting a loophole in NovaBox's mechanism of distributing dividends before updating balances when users deposit or withdraw. The hacker first deposited a small amount of NOVA tokens to trigger the dividend calculation, then deposited a large amount of ETH, significantly increasing the actual share. However, since the system did not update the balance in time, dividends were still calculated based on the previous small share, while payments were made based on the new large share, resulting in approximately 145.82 ETH of "phantom dividends," which drained the reward pool.

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