In MerkleVesting.sol::withdraw check return value of ERC20 transfer or use safeTransfer of OZ

Lines of code Vulnerability details Impact MerkleVesting.solL173 tree.tokenBalance -= currentWithdrawal; IERC20tree.tokenAddress.transferdestination, currentWithdrawal; In case of failed transfer here it do not check return value of transfer. it updates the tree balance without transfering the...

Missing ERC20 return value check in MerkleVesting#withdraw

Lines of code Vulnerability details MerkleVestingwithdraw does not check the return value of the token withdrawal on line 173. If an ERC20 token returns false to indicate a failed transfer but does not revert, this transfer will silently fail but the withdrawal amount will still be deducted from...

steal user funds with front-running when he calls depositTokens() of MerkleVesting and MerkleResistor with wrong treeIndex (uninitiated)

Lines of code Vulnerability details Impact This nature of this bug is similar in MerkleVesting and MerkleResistor and MerkleDropFactory, so I only write MerkleDropFactory version: If a user calls depositTokens with wrong treeIndex value by mistake, attacker can perform front-running attack and...