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The function approveUSDPrice() does not check if price feed roles are approving the price of the correct token contract (i.e. usdUpdateProposal.contracts). Due to this, if two token contracts have the same price (e.g. ETH and WETH), it does not check if the price being approved is actually for ETH or WETH i.e. the respective token contract price was proposed for. The same issue exists in disapproveUSDPrice().
