According to Odaily Planet Daily, Paidun posted on the X platform that Onyx appears to be a victim of a known precision issue in the forked CompoundV2 codebase, which has been exploited by attackers to siphon off 4.1 million VUSD, 7.35 million XCN, 5,000 DAI, 0.23 WBTC, and 50,000 USDT.