NFTBooks

If a published version is used to create a pre-order sale that is later canceled, the creator can no longer use the published version to create a pre-order sale again because the status `existedPublicationVersions[nftContract][publicationVersion]` did not change to `false` when the order was canceled. ```solidity=274 require( !existedPublicationVersions[nftContract][publicationVersion], "NFTMarketPreorder: publicationVersion is used" ); ```

The return value of the transfer()/transferFrom() call is not checked. ```solidity=68 token.transferFrom(from, to, amount); ``` --- ```solidity=63 IERC20Upgradeable(contractRegistry.getNFTBSToken()).transfer(to, amount); ``` --- ```solidity=86 IERC20Upgradeable(token).transfer(msg.sender, transferAmount); ``` --- ```solidity=53 rewardsToken.transfer(msg.sender, amount); ```

In the contract `NFTBSBscTreasury`, the state variable `merkleRoot` stands for an off-chain Merkle tree, which is used to verify whether a given user has the privilege to claim the treasury tokens. However, the actual Merkle tree used by the contract is uncertain and can be changed. Normally, the Merkle tree is used to prevent arbitrary changes to the nodes, but the contracts allow direct updates to the Merkle tree root, which can change the whole tree. Also, there is no on-chain view method for the users to check whether they are included in the Merkle tree. This may cause confusion among users. What's more, in the function `claim()`, `getClaimableBalance()`, `getClaimableTime` the parameter `merkleProof` is passed in to verify whether the `msg.sender` is in the Merkle tree. So the actual value is uncertain and malicious users can perform a second preimage attack. We would like to confirm with the client if the current implementation aligns with the original project design.

One or more logic contracts do not protect their initializers. An attacker can call the initializer and assume ownership of the logic contract, whereby she can perform privileged operations that trick unsuspecting users into believing that she is the owner of the upgradeable contract. ```solidity=19 contract NFTBSBookFactory is IBookFactory, Initializable { ``` - `NFTBSBookFactory` is an upgradeable contract that does not protect its initializer. ```solidity=134 function initialize(address _rolesContract, address _contractRegistry) ``` - `initialize` is an unprotected initializer function. --- ```solidity=16 contract NFTBSConfig is Initializable, IConfig { ``` - `NFTBSConfig` is an upgradeable contract that does not protect its initializer. ```solidity=83 function initialize(address _rolesContract, address _contractRegistry) public initializer { ``` - `initialize` is an unprotected initializer function. --- ```solidity=13 contract NFTBSContractRegistry is IContractRegistry, Initializable { ``` - `NFTBSContractRegistry` is an upgradeable contract that does not protect its initializer. ```solidity=91 function initialize(address _rolesContract) public initializer { ``` - `initialize` is an unprotected initializer function. --- ```solidity=18 contract NFTBSMarket is ``` - `NFTBSMarket` is an upgradeable contract that does not protect its initializer. ```solidity=42 function initialize(address _rolesContract, address _contractRegistry) ``` - `initialize` is an unprotected initializer function. --- ```solidity=14 contract NFTBSRolesContract is ``` - `NFTBSRolesContract` is an upgradeable contract that does not protect its initializer. ```solidity=25 function initialize(address admin) external initializer { ``` - `initialize` is an unprotected initializer function. --- ```solidity=16 contract NFTBSTreasury is Initializable, OwnableUpgradeable { ``` - `NFTBSTreasury` is an upgradeable contract that does not protect its initializer. ```solidity=28 function initialize(address _contractRegistry) ``` - `initialize` is an unprotected initializer function. --- ```solidity=15 contract NFTBSBscTreasury is Initializable, OwnableUpgradeable { ``` - `NFTBSBscTreasury` is an upgradeable contract that does not protect its initializer. ```solidity=36 function initialize(address _token) public initializer { ``` - `initialize` is an unprotected initializer function. --- ```solidity=14 contract NFTBSRewards is Initializable, OwnableUpgradeable { ``` - `NFTBSRewards` is an upgradeable contract that does not protect its initializer. ```solidity=29 function initialize() public initializer { ``` - `initialize` is an unprotected initializer function. --- ```solidity=17 contract NFTBooks is ContextUpgradeable, IERC20Upgradeable, OwnableUpgradeable { ``` - `NFTBooks` is an upgradeable contract that does not protect its initializer. ```solidity=138 function initialize( ``` - `initialize` is an unprotected initializer function.

```solidity=129 _serviceFeeForPreorder = uint16(serviceFeeForPreorder); ``` - The type conversion `uint16(serviceFeeForPreorder)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=140 _serviceFeeForSell = uint16(serviceFeeForSell); ``` - The type conversion `uint16(serviceFeeForSell)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=151 _serviceFeeForRental = uint16(serviceFeeForRental); ``` - The type conversion `uint16(serviceFeeForRental)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=167 _maxPublicationOpeningRange = uint64(maxPublicationOpeningRange); ``` - The type conversion `uint64(maxPublicationOpeningRange)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=178 _minRoyaltyForSell = uint16(minRoyaltyForSell); ``` - The type conversion `uint16(minRoyaltyForSell)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=189 _maxRoyaltyForSell = uint16(maxRoyaltyForSell); ``` - The type conversion `uint16(maxRoyaltyForSell)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=200 _minRoyaltyForRental = uint16(minRoyaltyForRental); ``` - The type conversion `uint16(minRoyaltyForRental)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=211 _maxRoyaltyForRental = uint16(maxRoyaltyForRental); ``` - The type conversion `uint16(maxRoyaltyForRental)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=227 _minNumberBooksForPublication = uint64(minNumberBooksForPublication); ``` - The type conversion `uint64(minNumberBooksForPublication)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=243 _maxNumberBooksForPublication = uint64(maxNumberBooksForPublication); ``` - The type conversion `uint64(maxNumberBooksForPublication)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=259 _minTimeToExtendBeforeRentalExpired = uint64(minTimeToExtendBeforeRentalExpired); ``` - The type conversion `uint64(minTimeToExtendBeforeRentalExpired)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=275 _minAllowedTimeToRepublish = uint64(minAllowedTimeToRepublish); ``` - The type conversion `uint64(minAllowedTimeToRepublish)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=52 info.expires = uint64(expires); ``` - The type conversion `uint64(expires)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=39 _totalPublications = uint64(totalPublications); ``` - The type conversion `uint64(totalPublications)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=41 _royaltyFeeForSell = uint16(royaltyFeeForSell); ``` - The type conversion `uint16(royaltyFeeForSell)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=42 _royaltyFeeForRental = uint16(royaltyFeeForRental); ``` - The type conversion `uint16(royaltyFeeForRental)` from larger type uint256 to smaller type uint16 may truncate data. --- ```solidity=53 _totalPublications = uint64(totalPublications); ``` - The type conversion `uint64(totalPublications)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=224 preorderSale.openDate = uint64(openDate); ``` - The type conversion `uint64(openDate)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=225 preorderSale.closeDate = uint64(closeDate); ``` - The type conversion `uint64(closeDate)` from larger type uint256 to smaller type uint64 may truncate data. --- ```solidity=226 preorderSale.quantityLimit = uint64(quantityLimit); ``` - The type conversion `uint64(quantityLimit)` from larger type uint256 to smaller type uint64 may truncate data.

The return value of an external call is not stored in a local or state variable. ```solidity=343 IBookContract(nftContract).updateTotalPublications(totalPublications); ``` --- ```solidity=178 IBookContract(nftContract).updateTokenFileCID(tokenId, fileCID); ``` --- ```solidity=146 IBookContract(nftContract).updateTokenFileCID(tokenId, fileCID); ``` --- ```solidity=283 IBookContract(nftContract).updateTokenFileCID(tokenId, fileCID); ``` --- ```solidity=855 uniswapV2Router.addLiquidityETH{value: maticAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable owner(), block.timestamp ); ```