MetronomeDAO has uncovered a $16 million shortfall in its synthetic asset pool caused by delayed Chainlink price feeds. Automated trading bots took advantage of outdated ETH/USD prices on Base, making profitable trades that drained collateral from the protocol’s swap module over several months.
According to MetronomeDAO, about 6,367 msETH and 4.57 million msUSD tokens in circulation are now effectively unbacked. This amounts to nearly a third of the synthetic ETH supply and a significant portion of synthetic USD tokens. The root of the problem lies in the Chainlink oracle’s median latency of 54 seconds, with instances where price updates lagged by over five minutes. These stale prices allowed bots to buy undervalued assets or sell overvalued ones before the oracle data refreshed, gradually eroding the protocol’s reserves.
Emergency Measures and Ongoing Risks
In response, MetronomeDAO deployed more than $34 million in defensive positions and injected $6.5 million of protocol-owned liquidity to stabilize the system. The swap feature has been suspended while architecture improvements are underway. To mitigate future risks, the protocol raised fees on all synthetic pairs and is working with Chainlink to improve oracle performance on the Base chain.
The incident shows a recurring challenge for DeFi protocols relying on oracles, especially as they expand to Layer 2 networks where block times are faster. Oracle update delays that were manageable on Ethereum mainnet can cause severe vulnerabilities elsewhere. This event follows concerns similar to those raised in recent market fluctuations, highlighting the fragile balance between price feed reliability and synthetic asset security.
MetronomeDAO assured that MET token holders are unlikely to suffer direct losses from this shortfall, but the incident remains a cautionary tale about oracle dependencies in decentralized finance.
This content is for informational purposes only and does not constitute financial advice.
