# On tax sells, swaps are vulnerable to MEV Medium · Three Sigma · Modular blockchain infrastructure · 27th January 2024 Finding 3S-TR-M03 of the Trestle wTIA Bridge security review. - Report: /reports/trestle-wtia-bridge - Source: https://github.com/0xsimao/audits/blob/main/Three%20Sigma/2024-01-27-trestle.pdf --- ### Description Tax sells specify a minimumAmountOut of 0, which is vulnerable to MEV. Keep in mind that this is usually a design choice of tax tokens to avoid other issues. ### Status Addressed by disabling taxes. Disclosed by 0xSimao (https://0xsimao.com/). --- Related findings: - [Withdrawals logic allows MEV exploits of TVL changes and zero-slippage zero-fee swaps](https://0xsimao.com/findings/renzo-withdrawals-zero-slippage-fee): Renzo - [Swapping with deadline as block.timestamp and 0 minimum amount out is vulnerable to MEV](https://0xsimao.com/findings/clip-finance-i-swapping-deadline-timestamp-mev): Clip Finance Strategies