Unbounded fee

[hats-bug-reporter[bot]]

Github username: -- Twitter username: -- Submission hash (on-chain): 0x7baf24a0cebcf0d5ca1b040bf9acfb1704ec36671a023d3039cd93e474ee66a9 Severity: medium

Description: Description\ The VaultBitcoinWallet - setFee() function allows any number in uint64 to be set as a _satoshiPerByte. This can lead to several problems:

• setting the fee higher than 100%
• fee setter can front-backrun users to grief them their total amount of sent funds

Recommendation\ Consider to mitigate this issue by setting a reasonable maximum upper cap for the fee (e.g. 20%)

[rotcivegaf]

It's not a medium issue The feeSetter it's set by the owner so it's trusted I think it's informational issue