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MetronomeDAO discloses $15.7 million msETH and msUSD synth shortfall

The protocol said the deficit equals about 31% of all msETH and 16% of all msUSD in existence, with losses that could fall on Curve and Aerodrome liquidity providers if prices drop and the gap is realized.

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MetronomeDAO disclosed that about 6,367 msETH and 4.57 million msUSD in circulation, worth roughly $15.7 million at current prices, lack backing. The decentralized protocol linked the shortfall to trading bots exploiting delayed price data in its swap module, according to a July 30 post-mortem cited by The Defiant.

The report said the damage corresponds to 31% of all msETH and 16% of all msUSD in existence, and that if token prices fall and the gap is realized, the losses would land on liquidity providers. Those are the users who deposited msETH and msUSD into trading pools on exchanges such as Curve and Aerodrome to earn fees.

Metronome said the issue is confined to the swap module, adding that its Morpho lending markets, the MetBasis product, and the core minting protocol still operate normally. It described that its synth system is designed so every token in circulation is matched by a debt position, meaning backing is maintained through a one-to-one relationship between synths and owed amounts with posted collateral.

The Defiant also noted that Metronome Synth holds $10 million in total value locked across Ethereum, Base, and Optimism, down from $17.56 million on Thursday. To close the gap, the protocol said it staged $34 million in defensive positions, and it attributed the exploit to Chainlink oracle updates that occur only after certain market thresholds or timed intervals, leaving on-chain prices to lag real markets by minutes.

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