CAGE [Coinage] Token

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

Coinage.addLiquidity(uint256,uint256) (#1106-1119) sends eth to arbitrary user
Dangerous calls:
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in Coinage._transfer(address,address,uint256) (#1020-1051):
External calls:
- swapAndLiquify() (#1030)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
- coinageFinanceRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1096-1102)
External calls sending eth:
- swapAndLiquify() (#1030)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#1034)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#644)
- _balances[recipient] = _balances[recipient].add(amount) (#645)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#1046)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#644)
- _balances[recipient] = _balances[recipient].add(amount) (#645)
- super._transfer(sender,address(this),liquidityAmount) (#1047)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#644)
- _balances[recipient] = _balances[recipient].add(amount) (#645)
- super._transfer(sender,recipient,sendAmount) (#1048)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#644)
- _balances[recipient] = _balances[recipient].add(amount) (#645)
Apply the check-effects-interactions pattern.

Additional information: link

Coinage._writeCheckpoint(address,uint32,uint256,uint256) (#1407-1425) uses a dangerous strict equality:
- nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber (#1417)
Don't use strict equality to determine if an account has enough Ether or tokens.

Additional information: link

Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Coinage._transfer(address,address,uint256) (#1020-1051) performs a multiplication on the result of a division:
-taxAmount = amount.mul(transferTaxRate).div(10000) (#1037)
-burnAmount = taxAmount.mul(burnRate).div(100) (#1038)
Consider ordering multiplication before division.

Additional information: link

Contract ownership is semi-renounced (passed to a contract)

Coinage._transfer(address,address,uint256) (#1020-1051) compares to a boolean constant:
-swapAndLiquifyEnabled == true && _inSwapAndLiquify == false && address(coinageFinanceRouter) != address(0) && coinageFinancePair != address(0) && sender != coinageFinancePair && sender != owner() (#1023-1028)
Remove the equality to the boolean constant.

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.6.12', '>=0.4.0', '>=0.5.0', '>=0.6.0<0.8.0', '>=0.6.2', '>=0.6.4']
- >=0.6.0<0.8.0 (#5)
- >=0.6.0<0.8.0 (#32)
- >=0.6.0<0.8.0 (#102)
- >=0.6.4 (#108)
- >=0.6.0<0.8.0 (#205)
- >=0.4.0 (#422)
- >=0.6.2 (#720)
- >=0.6.2 (#818)
- >=0.5.0 (#864)
- >=0.5.0 (#919)
- 0.6.12 (#937)
Use one Solidity version.

Additional information: link

Coinage.addLiquidity(uint256,uint256) (#1106-1119) ignores return value by coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
Ensure that all the return values of the function calls are used.

Additional information: link

BEP20.constructor(string,string).name (#474) shadows:
- BEP20.name() (#490-492) (function)
- IBEP20.name() (#129) (function)
BEP20.constructor(string,string).symbol (#474) shadows:
- BEP20.symbol() (#498-500) (function)
- IBEP20.symbol() (#124) (function)
BEP20.allowance(address,address).owner (#539) shadows:
- Ownable.owner() (#63-65) (function)
BEP20._approve(address,address,uint256).owner (#698) shadows:
- Ownable.owner() (#63-65) (function)
Coinage.swapAndLiquify().maxTransferAmount (#1056) shadows:
- Coinage.maxTransferAmount() (#1124-1126) (function)
Rename the local variables that shadow another component.

Additional information: link

Reentrancy in Coinage.swapAndLiquify() (#1054-1084):
External calls:
- swapTokensForEth(half) (#1074)
- coinageFinanceRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1096-1102)
- addLiquidity(otherHalf,newBalance) (#1080)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1080)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1080)
- _allowances[owner][spender] = amount (#702)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Coinage._transfer(address,address,uint256) (#1020-1051):
External calls:
- swapAndLiquify() (#1030)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
- coinageFinanceRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1096-1102)
External calls sending eth:
- swapAndLiquify() (#1030)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#646)
- super._transfer(sender,recipient,sendAmount) (#1048)
- Transfer(sender,recipient,amount) (#646)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#1046)
- Transfer(sender,recipient,amount) (#646)
- super._transfer(sender,address(this),liquidityAmount) (#1047)
- Transfer(sender,recipient,amount) (#646)
- super._transfer(sender,recipient,amount) (#1034)
Reentrancy in Coinage.swapAndLiquify() (#1054-1084):
External calls:
- swapTokensForEth(half) (#1074)
- coinageFinanceRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1096-1102)
- addLiquidity(otherHalf,newBalance) (#1080)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1080)
- coinageFinanceRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,BURN_ADDRESS,block.timestamp) (#1111-1118)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#703)
- addLiquidity(otherHalf,newBalance) (#1080)
- SwapAndLiquify(half,newBalance,otherHalf) (#1082)
Apply the check-effects-interactions pattern.

Additional information: link

Coinage.delegateBySig(address,uint256,uint256,uint8,bytes32,bytes32) (#1273-1314) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now <= expiry,COINAGE::delegateBySig: signature expired) (#1312)
Avoid relying on block.timestamp.

Additional information: link

Coinage.getChainId() (#1432-1436) uses assembly
- INLINE ASM (#1434)
Do not use evm assembly.

Additional information: link

BEP20._burn(address,uint256) (#677-683) is never used and should be removed
BEP20._burnFrom(address,uint256) (#712-715) is never used and should be removed
Context._msgData() (#22-25) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#392-395) is never used and should be removed
SafeMath.mod(uint256,uint256) (#354-357) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#412-415) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#226-230) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#262-265) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#272-275) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#247-255) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#237-240) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.6.0<0.8.0 (#5) is too complex
Pragma version>=0.6.0<0.8.0 (#32) is too complex
Pragma version>=0.6.0<0.8.0 (#102) is too complex
Pragma version>=0.6.4 (#108) allows old versions
Pragma version>=0.6.0<0.8.0 (#205) is too complex
Pragma version>=0.4.0 (#422) allows old versions
Pragma version>=0.6.2 (#720) allows old versions
Pragma version>=0.6.2 (#818) allows old versions
Pragma version>=0.5.0 (#864) allows old versions
Pragma version>=0.5.0 (#919) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Function IUniswapV2Router01.WETH() (#724) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#881) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#882) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#899) is not in mixedCase
Event CoinagecoinageFinanceRouterUpdated(address,address,address) (#975) is not in CapWords
Parameter Coinage.mint(address,uint256)._to (#1005) is not in mixedCase
Parameter Coinage.mint(address,uint256)._amount (#1005) is not in mixedCase
Parameter Coinage.isExcludeTaxFee(address)._add (#1010) is not in mixedCase
Parameter Coinage.setExcludeTaxFee(address,bool)._add (#1014) is not in mixedCase
Parameter Coinage.updateTransferTaxRate(uint16)._transferTaxRate (#1134) is not in mixedCase
Parameter Coinage.updateBurnRate(uint16)._burnRate (#1144) is not in mixedCase
Parameter Coinage.updateMaxTransferAmountRate(uint16)._maxTransferAmountRate (#1154) is not in mixedCase
Parameter Coinage.updateMinAmountToLiquify(uint256)._minAmount (#1164) is not in mixedCase
Parameter Coinage.updateSwapAndLiquifyEnabled(bool)._enabled (#1175) is not in mixedCase
Parameter Coinage.updateCoinageFinanceRouter(address)._router (#1184) is not in mixedCase
Variable Coinage._delegates (#1215) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#23)" inContext (#17-26)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#729) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#730)
Prevent variables from having similar names.

Additional information: link

Coinage.slitherConstructorConstantVariables() (#940-1438) uses literals with too many digits:
- BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD (#948)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#82-85)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#91-95)
symbol() should be declared external:
- BEP20.symbol() (#498-500)
decimals() should be declared external:
- BEP20.decimals() (#505-507)
transfer(address,uint256) should be declared external:
- BEP20.transfer(address,uint256) (#531-534)
allowance(address,address) should be declared external:
- BEP20.allowance(address,address) (#539-541)
approve(address,uint256) should be declared external:
- BEP20.approve(address,uint256) (#550-553)
transferFrom(address,address,uint256) should be declared external:
- BEP20.transferFrom(address,address,uint256) (#567-575)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#589-592)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#608-611)
mint(uint256) should be declared external:
- BEP20.mint(uint256) (#621-624)
mint(address,uint256) should be declared external:
- Coinage.mint(address,uint256) (#1005-1008)
isExcludeTaxFee(address) should be declared external:
- Coinage.isExcludeTaxFee(address) (#1010-1012)
setExcludeTaxFee(address,bool) should be declared external:
- Coinage.setExcludeTaxFee(address,bool) (#1014-1017)
updateTransferTaxRate(uint16) should be declared external:
- Coinage.updateTransferTaxRate(uint16) (#1134-1138)
updateBurnRate(uint16) should be declared external:
- Coinage.updateBurnRate(uint16) (#1144-1148)
updateMaxTransferAmountRate(uint16) should be declared external:
- Coinage.updateMaxTransferAmountRate(uint16) (#1154-1158)
updateMinAmountToLiquify(uint256) should be declared external:
- Coinage.updateMinAmountToLiquify(uint256) (#1164-1167)
updateSwapAndLiquifyEnabled(bool) should be declared external:
- Coinage.updateSwapAndLiquifyEnabled(bool) (#1175-1178)
updateCoinageFinanceRouter(address) should be declared external:
- Coinage.updateCoinageFinanceRouter(address) (#1184-1189)
operator() should be declared external:
- Coinage.operator() (#1194-1196)
transferOperator(address) should be declared external:
- Coinage.transferOperator(address) (#1202-1206)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract has 3% buy tax and 3% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.

Average 30d number of PancakeSwap swaps is low.

Number of Binance Smart Chain (BSC) token holders is low.

Token is deployed only at one blockchain

Token has only one trading pair

BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link

Unable to find token contract audit

Unable to find audit link on the website

Token is not listed at Mobula.Finance

Additional information: link

Unable to find whitepaper link on the website

Unable to find token on CoinHunt

Additional information: link

Unable to find code repository for the project

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Token has relatively low CoinGecko rank