cEvo [CardanoEvo] Token

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

CardanoEvo.addLiquidity(uint256,uint256) (CardanoEvo V2.sol#598-613) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- success = IERC20(ADA).transfer(address(dividendTracker),dividends) (CardanoEvo V2.sol#618)
- dividendTracker.distributeADADividends(dividends) (CardanoEvo V2.sol#621)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (CardanoEvo V2.sol#505)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (ERC20.sol#221)
- _balances[recipient] = _balances[recipient].add(amount) (ERC20.sol#222)
- super._transfer(from,to,amount) (CardanoEvo V2.sol#508)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (ERC20.sol#221)
- _balances[recipient] = _balances[recipient].add(amount) (ERC20.sol#222)
- swapping = false (CardanoEvo V2.sol#474)
Apply the check-effects-interactions pattern.

Additional information: link

CardanoEvo.swapAndSendToFee(uint256) (CardanoEvo V2.sol#525-532) ignores return value by IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

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.

Combination 2: Unchecked transfer + 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.

Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Contract ownership is not renounced (belongs to a wallet)

DividendPayingToken._withdrawDividendOfUser(address) (DividendPayingToken.sol#76-92) has external calls inside a loop: success = IERC20(ADA).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
Favor pull over push strategy for external calls.

Additional information: link

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (DividendPayingToken.sol#76-92):
External calls:
- success = IERC20(ADA).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (DividendPayingToken.sol#84)
Reentrancy in CardanoEvo.updateDividendTracker(address) (CardanoEvo V2.sol#173-188):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (CardanoEvo V2.sol#180)
- newDividendTracker.excludeFromDividends(address(this)) (CardanoEvo V2.sol#181)
- newDividendTracker.excludeFromDividends(owner()) (CardanoEvo V2.sol#182)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (CardanoEvo V2.sol#183)
State variables written after the call(s):
- dividendTracker = newDividendTracker (CardanoEvo V2.sol#187)
Apply the check-effects-interactions pattern.

Additional information: link

CardanoEvo._transfer(address,address,uint256).lastProcessedIndex (CardanoEvo V2.sol#516) is a local variable never initialized
CardanoEvo._transfer(address,address,uint256).iterations (CardanoEvo V2.sol#516) is a local variable never initialized
CardanoEvo._transfer(address,address,uint256).claims (CardanoEvo V2.sol#516) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

CardanoEvo.addLiquidity(uint256,uint256) (CardanoEvo V2.sol#598-613) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
CardanoEvo.claim() (CardanoEvo V2.sol#383-385) ignores return value by dividendTracker.processAccount(msg.sender,false) (CardanoEvo V2.sol#384)
CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523) ignores return value by dividendTracker.process(gas) (CardanoEvo V2.sol#516-521)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string)._name (DividendPayingToken.sol#50) shadows:
- ERC20._name (ERC20.sol#43) (state variable)
DividendPayingToken.accumulativeDividendOf(address)._owner (DividendPayingToken.sol#122) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.withdrawableDividendOf(address)._owner (DividendPayingToken.sol#105) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.constructor(string,string)._symbol (DividendPayingToken.sol#50) shadows:
- ERC20._symbol (ERC20.sol#44) (state variable)
DividendPayingToken.dividendOf(address)._owner (DividendPayingToken.sol#98) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
DividendPayingToken.withdrawnDividendOf(address)._owner (DividendPayingToken.sol#112) shadows:
- Ownable._owner (Ownable.sol#8) (state variable)
Rename the local variables that shadow another component.

Additional information: link

CardanoEvo.setMaxTxAmount(uint256) (CardanoEvo V2.sol#256-258) should emit an event for:
- maxTxAmount = amount * (10 ** 18) (CardanoEvo V2.sol#257)
CardanoEvo.setUpperlimitOfContractSell(uint256) (CardanoEvo V2.sol#265-269) should emit an event for:
- UpperlimitofContractSell = value * (10 ** 18) (CardanoEvo V2.sol#266)
CardanoEvo.setSellingFee(uint256) (CardanoEvo V2.sol#234-238) should emit an event for:
- sellingFee = value (CardanoEvo V2.sol#235)
CardanoEvo.setLiquidityFee(uint256) (CardanoEvo V2.sol#223-226) should emit an event for:
- liquidityFee = value (CardanoEvo V2.sol#224)
- totalFees = ADARewardsFee.add(liquidityFee).add(marketingFee) (CardanoEvo V2.sol#225)
CardanoEvo.setSniperFee(uint256) (CardanoEvo V2.sol#240-244) should emit an event for:
- sniperFee = value (CardanoEvo V2.sol#241)
CardanoEvo.setMarketingFee(uint256) (CardanoEvo V2.sol#228-232) should emit an event for:
- marketingFee = value (CardanoEvo V2.sol#229)
- totalFees = ADARewardsFee.add(liquidityFee).add(marketingFee) (CardanoEvo V2.sol#230)
CardanoEvo.setADARewardsFee(uint256) (CardanoEvo V2.sol#218-221) should emit an event for:
- ADARewardsFee = value (CardanoEvo V2.sol#219)
- totalFees = ADARewardsFee.add(liquidityFee).add(marketingFee) (CardanoEvo V2.sol#220)
CardanoEvo.setMaxWalletBalance(uint256) (CardanoEvo V2.sol#260-262) should emit an event for:
- maxWalletBalance = amount * (10 ** 18) (CardanoEvo V2.sol#261)
CardanoEvo.setswapTokensAtAmount(uint256) (CardanoEvo V2.sol#272-276) should emit an event for:
- swapTokensAtAmount = value * (10 ** 18) (CardanoEvo V2.sol#273)
Emit an event for critical parameter changes.

Additional information: link

CardanoEvo.setMarketingWallet(address).wallet (CardanoEvo V2.sol#214) lacks a zero-check on :
- _marketingWalletAddress = wallet (CardanoEvo V2.sol#215)
CardanoEvo.updateUniswapV2Router(address)._uniswapV2Pair (CardanoEvo V2.sol#194-195) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (CardanoEvo V2.sol#196)
Check that the address is not zero.

Additional information: link

Variable 'CardanoEvo._transfer(address,address,uint256).iterations (CardanoEvo V2.sol#516)' in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (CardanoEvo V2.sol#517)
Variable 'CardanoEvo._transfer(address,address,uint256).claims (CardanoEvo V2.sol#516)' in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (CardanoEvo V2.sol#517)
Variable 'CardanoEvo._transfer(address,address,uint256).lastProcessedIndex (CardanoEvo V2.sol#516)' in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (CardanoEvo V2.sol#517)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
State variables written after the call(s):
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- success = IERC20(ADA).transfer(address(dividendTracker),dividends) (CardanoEvo V2.sol#618)
- dividendTracker.distributeADADividends(dividends) (CardanoEvo V2.sol#621)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
State variables written after the call(s):
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Reentrancy in CARDANOEVODividendTracker.processAccount(address,bool) (CardanoEvo V2.sol#829-839):
External calls:
- amount = _withdrawDividendOfUser(account) (CardanoEvo V2.sol#830)
- success = IERC20(ADA).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (CardanoEvo V2.sol#833)
Reentrancy in CardanoEvo.updateUniswapV2Router(address) (CardanoEvo V2.sol#190-197):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (CardanoEvo V2.sol#194-195)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (CardanoEvo V2.sol#196)
Reentrancy in CardanoEvo.swapAndLiquify(uint256) (CardanoEvo V2.sol#534-555):
External calls:
- swapTokensForEth(half) (CardanoEvo V2.sol#546)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- _allowances[owner][spender] = amount (ERC20.sol#287)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in CardanoEvo.swapAndSendDividends(uint256) (CardanoEvo V2.sol#615-624):
External calls:
- swapTokensForAda(tokens) (CardanoEvo V2.sol#616)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- success = IERC20(ADA).transfer(address(dividendTracker),dividends) (CardanoEvo V2.sol#618)
- dividendTracker.distributeADADividends(dividends) (CardanoEvo V2.sol#621)
Event emitted after the call(s):
- SendDividends(tokens,dividends) (CardanoEvo V2.sol#622)
Reentrancy in CardanoEvo._setAutomatedMarketMakerPair(address,bool) (CardanoEvo V2.sol#305-314):
External calls:
- dividendTracker.excludeFromDividends(pair) (CardanoEvo V2.sol#310)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (CardanoEvo V2.sol#313)
Reentrancy in CardanoEvo.updateDividendTracker(address) (CardanoEvo V2.sol#173-188):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (CardanoEvo V2.sol#180)
- newDividendTracker.excludeFromDividends(address(this)) (CardanoEvo V2.sol#181)
- newDividendTracker.excludeFromDividends(owner()) (CardanoEvo V2.sol#182)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (CardanoEvo V2.sol#183)
Event emitted after the call(s):
- UpdateDividendTracker(newAddress,address(dividendTracker)) (CardanoEvo V2.sol#185)
Reentrancy in CardanoEvo.processDividendTracker(uint256) (CardanoEvo V2.sol#378-381):
External calls:
- (iterations,claims,lastProcessedIndex) = dividendTracker.process(gas) (CardanoEvo V2.sol#379)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,false,gas,tx.origin) (CardanoEvo V2.sol#380)
Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- success = IERC20(ADA).transfer(address(dividendTracker),dividends) (CardanoEvo V2.sol#618)
- dividendTracker.distributeADADividends(dividends) (CardanoEvo V2.sol#621)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- dividendTracker.setBalance(address(from),balanceOf(from)) (CardanoEvo V2.sol#510)
- dividendTracker.setBalance(address(to),balanceOf(to)) (CardanoEvo V2.sol#511)
- dividendTracker.process(gas) (CardanoEvo V2.sol#516-521)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (CardanoEvo V2.sol#517)
Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- success = IERC20(ADA).transfer(address(dividendTracker),dividends) (CardanoEvo V2.sol#618)
- dividendTracker.distributeADADividends(dividends) (CardanoEvo V2.sol#621)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- SendDividends(tokens,dividends) (CardanoEvo V2.sol#622)
- swapAndSendDividends(sellTokens) (CardanoEvo V2.sol#472)
- Transfer(sender,recipient,amount) (ERC20.sol#223)
- super._transfer(from,to,amount) (CardanoEvo V2.sol#508)
- Transfer(sender,recipient,amount) (ERC20.sol#223)
- super._transfer(from,address(this),fees) (CardanoEvo V2.sol#505)
Reentrancy in CARDANOEVODividendTracker.processAccount(address,bool) (CardanoEvo V2.sol#829-839):
External calls:
- amount = _withdrawDividendOfUser(account) (CardanoEvo V2.sol#830)
- success = IERC20(ADA).transfer(user,_withdrawableDividend) (DividendPayingToken.sol#81)
Event emitted after the call(s):
- Claim(account,amount,automatic) (CardanoEvo V2.sol#834)
Reentrancy in CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523):
External calls:
- swapAndSendToFee(marketingTokens) (CardanoEvo V2.sol#466)
- IERC20(ADA).transfer(_marketingWalletAddress,newBalance) (CardanoEvo V2.sol#531)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#589-595)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
External calls sending eth:
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
- SwapAndLiquify(half,newBalance,otherHalf) (CardanoEvo V2.sol#554)
- swapAndLiquify(swapTokens) (CardanoEvo V2.sol#469)
Reentrancy in CardanoEvo.swapAndLiquify(uint256) (CardanoEvo V2.sol#534-555):
External calls:
- swapTokensForEth(half) (CardanoEvo V2.sol#546)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (CardanoEvo V2.sol#569-575)
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (CardanoEvo V2.sol#604-611)
Event emitted after the call(s):
- Approval(owner,spender,amount) (ERC20.sol#288)
- addLiquidity(otherHalf,newBalance) (CardanoEvo V2.sol#552)
- SwapAndLiquify(half,newBalance,otherHalf) (CardanoEvo V2.sol#554)
Apply the check-effects-interactions pattern.

Additional information: link

CARDANOEVODividendTracker.getAccount(address) (CardanoEvo V2.sol#693-736) uses timestamp for comparisons
Dangerous comparisons:
- nextClaimTime > block.timestamp (CardanoEvo V2.sol#733-735)
CARDANOEVODividendTracker.canAutoClaim(uint256) (CardanoEvo V2.sol#757-763) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (CardanoEvo V2.sol#758)
- block.timestamp.sub(lastClaimTime) >= claimWait (CardanoEvo V2.sol#762)
Avoid relying on block.timestamp.

Additional information: link

CardanoEvo._transfer(address,address,uint256) (CardanoEvo V2.sol#405-523) compares to a boolean constant:
-require(bool,string)(tradingEnabled == true,Trading not enabled yet) (CardanoEvo V2.sol#426)
Remove the equality to the boolean constant.

Additional information: link

SafeMathInt.div(int256,int256) (SafeMathInt.sol#53-59) is never used and should be removed
SafeMathInt.abs(int256) (SafeMathInt.sol#82-85) is never used and should be removed
SafeMathInt.mul(int256,int256) (SafeMathInt.sol#41-48) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (SafeMath.sol#142-145) is never used and should be removed
Context._msgData() (Context.sol#20-23) is never used and should be removed
SafeMath.mod(uint256,uint256) (SafeMath.sol#126-128) is never used and should be removed
DividendPayingToken._transfer(address,address,uint256) (DividendPayingToken.sol#132-138) is never used and should be removed
Remove unused functions.

Additional information: link

CardanoEvo.totalFees (CardanoEvo V2.sol#84) is set pre-construction with a non-constant function or state variable:
- ADARewardsFee.add(liquidityFee).add(marketingFee)
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Pragma version^0.6.2 (IUniswapV2Factory.sol#3) allows old versions
Pragma version^0.6.2 (DividendPayingToken.sol#3) allows old versions
Pragma version^0.6.2 (IERC20Metadata.sol#3) allows old versions
Pragma version^0.6.2 (CardanoEvo V2.sol#38) allows old versions
Pragma version^0.6.2 (IUniswapV2Pair.sol#3) allows old versions
Pragma version^0.6.2 (SafeMathUint.sol#3) allows old versions
Pragma version^0.6.2 (SafeMathInt.sol#28) allows old versions
Pragma version^0.6.2 (IERC20.sol#3) allows old versions
Pragma version^0.6.2 (ERC20.sol#3) allows old versions
Pragma version^0.6.2 (Context.sol#3) allows old versions
Pragma version^0.6.2 (SafeMath.sol#3) allows old versions
Pragma version^0.6.2 (IUniswapV2Router.sol#3) allows old versions
Pragma version^0.6.2 (DividendPayingTokenInterface.sol#3) allows old versions
Pragma version^0.6.2 (IterableMapping.sol#2) allows old versions
Pragma version^0.6.2 (DividendPayingTokenOptionalInterface.sol#3) allows old versions
Pragma version^0.6.2 (Ownable.sol#1) 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

Variable CardanoEvo._isBlacklisted (CardanoEvo V2.sol#79) is not in mixedCase
Parameter CardanoEvo.BurnContractTaxTokens(uint256)._amount (CardanoEvo V2.sol#626) is not in mixedCase
Variable CardanoEvo.ADA (CardanoEvo V2.sol#61) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (IUniswapV2Pair.sol#21) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (IUniswapV2Pair.sol#38) is not in mixedCase
Parameter CARDANOEVODividendTracker.getAccount(address)._account (CardanoEvo V2.sol#693) is not in mixedCase
Constant DividendPayingToken.magnitude (DividendPayingToken.sol#30) is not in UPPER_CASE_WITH_UNDERSCORES
Variable CardanoEvo.antiSniping_failsafe (CardanoEvo V2.sol#76) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (IUniswapV2Pair.sol#20) is not in mixedCase
Variable DividendPayingToken.ADA (DividendPayingToken.sol#24) is not in mixedCase
Variable CardanoEvo.ADARewardsFee (CardanoEvo V2.sol#81) is not in mixedCase
Parameter DividendPayingToken.dividendOf(address)._owner (DividendPayingToken.sol#98) is not in mixedCase
Function CardanoEvo.BurnContractTaxTokens(uint256) (CardanoEvo V2.sol#626-630) is not in mixedCase
Parameter DividendPayingToken.withdrawnDividendOf(address)._owner (DividendPayingToken.sol#112) is not in mixedCase
Parameter DividendPayingToken.withdrawableDividendOf(address)._owner (DividendPayingToken.sol#105) is not in mixedCase
Variable CardanoEvo._marketingWalletAddress (CardanoEvo V2.sol#88) is not in mixedCase
Function IUniswapV2Router01.WETH() (IUniswapV2Router.sol#7) is not in mixedCase
Parameter DividendPayingToken.accumulativeDividendOf(address)._owner (DividendPayingToken.sol#122) is not in mixedCase
Variable CardanoEvo.UpperlimitofContractSell (CardanoEvo V2.sol#69) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (Context.sol#21)" inContext (Context.sol#15-24)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (DividendPayingToken.sol#77) is too similar to CARDANOEVODividendTracker.getAccount(address).withdrawableDividends (CardanoEvo V2.sol#698)
Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (IUniswapV2Router.sol#12) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (IUniswapV2Router.sol#13)
Prevent variables from having similar names.

Additional information: link

CardanoEvo.updateGasForProcessing(uint256) (CardanoEvo V2.sol#317-322) uses literals with too many digits:
- require(bool,string)(newValue >= 200000 && newValue <= 500000,CARDANOEVO: gasForProcessing must be between 200,000 and 500,000) (CardanoEvo V2.sol#318)
CardanoEvo.slitherConstructorVariables() (CardanoEvo V2.sol#49-631) uses literals with too many digits:
- deadWallet = 0x000000000000000000000000000000000000dEaD (CardanoEvo V2.sol#59)
CARDANOEVODividendTracker.getAccountAtIndex(uint256) (CardanoEvo V2.sol#738-755) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (CardanoEvo V2.sol#749)
CardanoEvo.slitherConstructorVariables() (CardanoEvo V2.sol#49-631) uses literals with too many digits:
- swapTokensAtAmount = 900000 * (10 ** 18) (CardanoEvo V2.sol#63)
CardanoEvo.slitherConstructorVariables() (CardanoEvo V2.sol#49-631) uses literals with too many digits:
- maxTxAmount = 67500000 * (10 ** 18) (CardanoEvo V2.sol#64)
CardanoEvo.slitherConstructorVariables() (CardanoEvo V2.sol#49-631) uses literals with too many digits:
- maxWalletBalance = 100000000000 * (10 ** 18) (CardanoEvo V2.sol#65)
CardanoEvo.slitherConstructorVariables() (CardanoEvo V2.sol#49-631) uses literals with too many digits:
- gasForProcessing = 300000 (CardanoEvo V2.sol#92)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SafeMathInt.MAX_INT256 (SafeMathInt.sol#36) is never used in SafeMathInt (SafeMathInt.sol#34-92)
CardanoEvo.manualLaunch (CardanoEvo V2.sol#75) is never used in CardanoEvo (CardanoEvo V2.sol#49-631)
Remove unused state variables.

Additional information: link

CardanoEvo.deadWallet (CardanoEvo V2.sol#59) should be constant
CardanoEvo.manualLaunch (CardanoEvo V2.sol#75) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

get(IterableMapping.Map,address) should be declared external:
- IterableMapping.get(IterableMapping.Map,address) (IterableMapping.sol#13-15)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (ERC20.sol#151-159)
getKeyAtIndex(IterableMapping.Map,uint256) should be declared external:
- IterableMapping.getKeyAtIndex(IterableMapping.Map,uint256) (IterableMapping.sol#24-26)
updateUniswapV2Router(address) should be declared external:
- CardanoEvo.updateUniswapV2Router(address) (CardanoEvo V2.sol#190-197)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (Ownable.sol#43-46)
distributeADADividends(uint256) should be declared external:
- DividendPayingToken.distributeADADividends(uint256) (DividendPayingToken.sol#55-66)
excludeMultipleAccountsFromFees(address[],bool) should be declared external:
- CardanoEvo.excludeMultipleAccountsFromFees(address[],bool) (CardanoEvo V2.sol#206-212)
decimals() should be declared external:
- ERC20.decimals() (ERC20.sol#88-90)
dividendOf(address) should be declared external:
- DividendPayingToken.dividendOf(address) (DividendPayingToken.sol#98-100)
getIndexOfKey(IterableMapping.Map,address) should be declared external:
- IterableMapping.getIndexOfKey(IterableMapping.Map,address) (IterableMapping.sol#17-22)
dividendTokenBalanceOf(address) should be declared external:
- CardanoEvo.dividendTokenBalanceOf(address) (CardanoEvo V2.sol#344-346)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (ERC20.sol#192-195)
symbol() should be declared external:
- ERC20.symbol() (ERC20.sol#71-73)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (ERC20.sol#114-117)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (ERC20.sol#173-176)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- CardanoEvo.setAutomatedMarketMakerPair(address,bool) (CardanoEvo V2.sol#294-298)
setAntiSniper(bool) should be declared external:
- CardanoEvo.setAntiSniper(bool) (CardanoEvo V2.sol#397-400)
size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (IterableMapping.sol#30-32)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Ownable.sol#52-56)
updateGasForProcessing(uint256) should be declared external:
- CardanoEvo.updateGasForProcessing(uint256) (CardanoEvo V2.sol#317-322)
withdrawableDividendOf(address) should be declared external:
- CardanoEvo.withdrawableDividendOf(address) (CardanoEvo V2.sol#340-342)
name() should be declared external:
- ERC20.name() (ERC20.sol#63-65)
getAccountAtIndex(uint256) should be declared external:
- CARDANOEVODividendTracker.getAccountAtIndex(uint256) (CardanoEvo V2.sol#738-755)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (ERC20.sol#133-136)
updateDividendTracker(address) should be declared external:
- CardanoEvo.updateDividendTracker(address) (CardanoEvo V2.sol#173-188)
process(uint256) should be declared external:
- CARDANOEVODividendTracker.process(uint256) (CardanoEvo V2.sol#782-827)
withdrawnDividendOf(address) should be declared external:
- DividendPayingToken.withdrawnDividendOf(address) (DividendPayingToken.sol#112-114)
withdrawDividend() should be declared external:
- CARDANOEVODividendTracker.withdrawDividend() (CardanoEvo V2.sol#662-664)
- DividendPayingToken.withdrawDividend() (DividendPayingToken.sol#70-72)
isExcludedFromFees(address) should be declared external:
- CardanoEvo.isExcludedFromFees(address) (CardanoEvo V2.sol#336-338)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (ERC20.sol#122-124)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract has 15% buy tax and 17% sell tax.
Taxes are suspiciously high (over 10%) and contract ownership is not renounced. Token has a high risk of becoming a honeypot.

Average 30d PancakeSwap volume is low.

Average PancakeSwap trading volume, liqudity, number of swaps are low. Token seems to be inactive.

Token is deployed only at one blockchain

Swap operations require suspiciously high gas. Contract logic is complex and may disguise some form of scam.

Average 30d PancakeSwap liquidity is low.

Average 30d number of PancakeSwap swaps is low.

Unable to find token contract audit

Unable to find audit link on the website

Unable to find whitepaper link on the website

Unable to find Telegram link on the website

Unable to find Twitter link on the website

Token is not listed at Mobula.Finance

Additional information: link

Unable to find token on CoinHunt

Additional information: link

Token has relatively low CoinGecko rank

Token has relatively low CoinMarketCap rank