Submitted by ronnyx2017, also found by bin2chen
If the curve pool of a CurveStableCollateral is a Plain Pool with a native gas token, just like eth/stETH pool: https://etherscan.io/address/0xdc24316b9ae028f1497c275eb9192a3ea0f67022#code
The price can be manipulated by Curve Read-only Reentrancy.
A example is eth/stETH pool, in its remove_liquidity function:
First, LP tokens are burned. Next, each token is transferred out to the msg.sender. Given that ETH will be the first coin transferred out, token balances and total LP token supply will be inconsistent during the execution of the fallback function.
The CurveStableCollateral uses total underlying token balance value / lp supply to calculate the lp token price:
So the price will be higher than the actual value because the other assets(except eth) are still in the pool but the lp supply has been cut down during the remove_liquidity fallback.
tbrent (Reserve) commented via duplicate issue #14:
tbrent (Reserve) commented via duplicate issue #14:
pmckelvy1 (Reserve) confirmed via duplicate issue #14
Reserve Mitigated:
Status: Mitigation confirmed. Full details in reports from  RaymondFam, ronnyx2017 and bin2chen.
