Compound discovers bug in new update, freezes cETH market

DeFi protocol Compound (COMP) discovered a bug in governance proposal 117 designed to upgrade its price feeds, forcing it to temporarily freeze the Compound ETH (cETH) market.According to an August 30 Twitter thread, the bug made “transactions for ETH suppliers and borrowers revert.”

The team said that its users’ “funds are not immediately at risk” and added that its interface is currently not accessible due to the “price discrepancy.” Proposal 117 was designed to update the oracle contracts on the lending protocol to a new version that uses Uniswap V3 instead of V2 for price feeds. GFX Labs proposed it on behalf of ChainLink. The proposal was audited by OpenZeppelin, Dedaub, and ABDK, who all missed the bug. The function returns empty bytes whenever it is called, thereby reverting transactions.#Web3GrandPappa

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