MTC [METACX] Token

METACX.addLiquidity(uint256,uint256) (#754-767) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in METACX._transfer(address,address,uint256) (#663-701):
External calls:
- swapAndLiquify(contractTokenBalance) (#685)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#685)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#688)
- _balances[recipient] = _balances[recipient].add(finalAmount) (#696)
- finalAmount = takeFee(sender,recipient,amount) (#690-691)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#781)
Apply the check-effects-interactions pattern.

Additional information: link

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

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.

Contract ownership is not renounced (belongs to a wallet)

METACX.addLiquidity(uint256,uint256) (#754-767) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
Ensure that all the return values of the function calls are used.

Additional information: link

METACX.allowance(address,address).owner (#518) shadows:
- Ownable.owner() (#152-154) (function)
METACX._approve(address,address,uint256).owner (#541) shadows:
- Ownable.owner() (#152-154) (function)
Rename the local variables that shadow another component.

Additional information: link

METACX.setBuyTaxes(uint256,uint256,uint256) (#561-567) should emit an event for:
- _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyTeamFee) (#566)
METACX.setSellTaxes(uint256,uint256,uint256) (#569-575) should emit an event for:
- _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellTeamFee) (#574)
METACX.setDistributionSettings(uint256,uint256,uint256) (#577-583) should emit an event for:
- _liquidityShare = newLiquidityShare (#578)
- _teamShare = newTeamShare (#580)
- _totalDistributionShares = _liquidityShare.add(_marketingShare).add(_teamShare) (#582)
METACX.setMaxTxAmount(uint256) (#585-587) should emit an event for:
- _maxTxAmount = maxTxAmount (#586)
METACX.setWalletLimit(uint256) (#597-599) should emit an event for:
- _walletMax = newLimit (#598)
METACX.setNumTokensBeforeSwap(uint256) (#601-603) should emit an event for:
- minimumTokensBeforeSwap = newLimit (#602)
Emit an event for critical parameter changes.

Additional information: link

METACX.setMarketingWalletAddress(address).newAddress (#605) lacks a zero-check on :
- marketingWalletAddress = address(newAddress) (#606)
METACX.setTeamWalletAddress(address).newAddress (#609) lacks a zero-check on :
- teamWalletAddress = address(newAddress) (#610)
Check that the address is not zero.

Additional information: link

Reentrancy in METACX.changeRouterVersion(address) (#630-647):
External calls:
- newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#638-639)
State variables written after the call(s):
- isMarketPair[address(uniswapPair)] = true (#646)
- isWalletLimitExempt[address(uniswapPair)] = true (#645)
- uniswapPair = newPairAddress (#642)
- uniswapV2Router = _uniswapV2Router (#643)
Reentrancy in METACX.constructor() (#468-496):
External calls:
- uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#472-473)
State variables written after the call(s):
- _allowances[address(this)][address(uniswapV2Router)] = _totalSupply (#476)
- _balances[_msgSender()] = _totalSupply (#494)
- _totalDistributionShares = _liquidityShare.add(_marketingShare).add(_teamShare) (#483)
- _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyTeamFee) (#481)
- _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellTeamFee) (#482)
- isExcludedFromFee[owner()] = true (#478)
- isExcludedFromFee[address(this)] = true (#479)
- isMarketPair[address(uniswapPair)] = true (#492)
- isTxLimitExempt[owner()] = true (#489)
- isTxLimitExempt[address(this)] = true (#490)
- isWalletLimitExempt[owner()] = true (#485)
- isWalletLimitExempt[address(uniswapPair)] = true (#486)
- isWalletLimitExempt[address(this)] = true (#487)
- uniswapV2Router = _uniswapV2Router (#475)
Reentrancy in METACX.swapAndLiquify(uint256) (#710-732):
External calls:
- swapTokensForEth(tokensForSwap) (#715)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#725)
- recipient.transfer(amount) (#627)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#728)
- recipient.transfer(amount) (#627)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- _allowances[owner][spender] = amount (#545)
Reentrancy in METACX.transferFrom(address,address,uint256) (#657-661):
External calls:
- _transfer(sender,recipient,amount) (#658)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
External calls sending eth:
- _transfer(sender,recipient,amount) (#658)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#659)
- _allowances[owner][spender] = amount (#545)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in METACX._transfer(address,address,uint256) (#663-701):
External calls:
- swapAndLiquify(contractTokenBalance) (#685)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#685)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#782)
- finalAmount = takeFee(sender,recipient,amount) (#690-691)
- Transfer(sender,recipient,finalAmount) (#698)
Reentrancy in METACX.constructor() (#468-496):
External calls:
- uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#472-473)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_totalSupply) (#495)
Reentrancy in METACX.swapAndLiquify(uint256) (#710-732):
External calls:
- swapTokensForEth(tokensForSwap) (#715)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#725)
- recipient.transfer(amount) (#627)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#728)
- recipient.transfer(amount) (#627)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#546)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
Reentrancy in METACX.swapTokensForEth(uint256) (#734-752):
External calls:
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
Event emitted after the call(s):
- SwapTokensForETH(tokenAmount,path) (#751)
Reentrancy in METACX.transferFrom(address,address,uint256) (#657-661):
External calls:
- _transfer(sender,recipient,amount) (#658)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#743-749)
External calls sending eth:
- _transfer(sender,recipient,amount) (#658)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#546)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#659)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#187-192) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is locked until 7 days) (#189)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#83-92) uses assembly
- INLINE ASM (#90)
Address._functionCallWithValue(address,bytes,uint256,string) (#119-136) uses assembly
- INLINE ASM (#128-131)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#119-136) is never used and should be removed
Address.functionCall(address,bytes) (#102-104) is never used and should be removed
Address.functionCall(address,bytes,string) (#106-108) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#110-112) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#114-117) is never used and should be removed
Address.isContract(address) (#83-92) is never used and should be removed
Address.sendValue(address,uint256) (#94-100) is never used and should be removed
Context._msgData() (#10-13) is never used and should be removed
SafeMath.mod(uint256,uint256) (#71-73) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#75-78) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#94-100):
- (success) = recipient.call{value: amount}() (#98)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#119-136):
- (success,returndata) = target.call{value: weiValue}(data) (#122)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#226) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#227) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#243) is not in mixedCase
Function IUniswapV2Router01.WETH() (#262) is not in mixedCase
Parameter METACX.setSwapAndLiquifyEnabled(bool)._enabled (#613) is not in mixedCase
Variable METACX._balances (#408) is not in mixedCase
Variable METACX._buyLiquidityFee (#416) is not in mixedCase
Variable METACX._buyMarketingFee (#417) is not in mixedCase
Variable METACX._buyTeamFee (#418) is not in mixedCase
Variable METACX._sellLiquidityFee (#420) is not in mixedCase
Variable METACX._sellMarketingFee (#421) is not in mixedCase
Variable METACX._sellTeamFee (#422) is not in mixedCase
Variable METACX._liquidityShare (#424) is not in mixedCase
Variable METACX._marketingShare (#425) is not in mixedCase
Variable METACX._teamShare (#426) is not in mixedCase
Variable METACX._totalTaxIfBuying (#428) is not in mixedCase
Variable METACX._totalTaxIfSelling (#429) is not in mixedCase
Variable METACX._totalDistributionShares (#430) is not in mixedCase
Variable METACX._maxTxAmount (#433) is not in mixedCase
Variable METACX._walletMax (#434) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#11)" inContext (#4-14)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in METACX._transfer(address,address,uint256) (#663-701):
External calls:
- swapAndLiquify(contractTokenBalance) (#685)
- recipient.transfer(amount) (#627)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#685)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#688)
- _balances[recipient] = _balances[recipient].add(finalAmount) (#696)
- finalAmount = takeFee(sender,recipient,amount) (#690-691)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#781)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#782)
- finalAmount = takeFee(sender,recipient,amount) (#690-691)
- Transfer(sender,recipient,finalAmount) (#698)
Reentrancy in METACX.swapAndLiquify(uint256) (#710-732):
External calls:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#725)
- recipient.transfer(amount) (#627)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#728)
- recipient.transfer(amount) (#627)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#725)
- recipient.transfer(amount) (#627)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#728)
- recipient.transfer(amount) (#627)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
- _allowances[owner][spender] = amount (#545)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#546)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#731)
Reentrancy in METACX.transferFrom(address,address,uint256) (#657-661):
External calls:
- _transfer(sender,recipient,amount) (#658)
- recipient.transfer(amount) (#627)
External calls sending eth:
- _transfer(sender,recipient,amount) (#658)
- recipient.transfer(amount) (#627)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#759-766)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#659)
- _allowances[owner][spender] = amount (#545)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#546)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#659)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#267) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#268)
Prevent variables from having similar names.

Additional information: link

METACX.slitherConstructorVariables() (#395-789) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#406)
METACX.slitherConstructorVariables() (#395-789) uses literals with too many digits:
- _totalSupply = 1000000000 * 10 ** 18 (#432)
METACX.slitherConstructorVariables() (#395-789) uses literals with too many digits:
- _maxTxAmount = 1000000000 * 10 ** 18 (#433)
METACX.slitherConstructorVariables() (#395-789) uses literals with too many digits:
- _walletMax = 1000000000 * 10 ** 18 (#434)
METACX.slitherConstructorVariables() (#395-789) uses literals with too many digits:
- minimumTokensBeforeSwap = 100000 * 10 ** 18 (#435)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

METACX._decimals (#402) should be constant
METACX._name (#400) should be constant
METACX._symbol (#401) should be constant
METACX._totalSupply (#432) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

waiveOwnership() should be declared external:
- Ownable.waiveOwnership() (#161-164)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#166-170)
getUnlockTime() should be declared external:
- Ownable.getUnlockTime() (#172-174)
getTime() should be declared external:
- Ownable.getTime() (#176-178)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#180-185)
unlock() should be declared external:
- Ownable.unlock() (#187-192)
name() should be declared external:
- METACX.name() (#498-500)
symbol() should be declared external:
- METACX.symbol() (#502-504)
decimals() should be declared external:
- METACX.decimals() (#506-508)
totalSupply() should be declared external:
- METACX.totalSupply() (#510-512)
allowance(address,address) should be declared external:
- METACX.allowance(address,address) (#518-520)
increaseAllowance(address,uint256) should be declared external:
- METACX.increaseAllowance(address,uint256) (#522-525)
decreaseAllowance(address,uint256) should be declared external:
- METACX.decreaseAllowance(address,uint256) (#527-530)
minimumTokensBeforeSwapAmount() should be declared external:
- METACX.minimumTokensBeforeSwapAmount() (#532-534)
approve(address,uint256) should be declared external:
- METACX.approve(address,uint256) (#536-539)
setMarketPairStatus(address,bool) should be declared external:
- METACX.setMarketPairStatus(address,bool) (#549-551)
setIsExcludedFromFee(address,bool) should be declared external:
- METACX.setIsExcludedFromFee(address,bool) (#557-559)
setSwapAndLiquifyEnabled(bool) should be declared external:
- METACX.setSwapAndLiquifyEnabled(bool) (#613-616)
setSwapAndLiquifyByLimitOnly(bool) should be declared external:
- METACX.setSwapAndLiquifyByLimitOnly(bool) (#618-620)
getCirculatingSupply() should be declared external:
- METACX.getCirculatingSupply() (#622-624)
changeRouterVersion(address) should be declared external:
- METACX.changeRouterVersion(address) (#630-647)
transfer(address,uint256) should be declared external:
- METACX.transfer(address,uint256) (#652-655)
transferFrom(address,address,uint256) should be declared external:
- METACX.transferFrom(address,address,uint256) (#657-661)
Use the external attribute for functions never called from the contract.

Additional information: link

Attempt to swap token was unsuccessful. For some reason it is untradeable. If token is not in presale stage and is not traded outside PancakeSwap, then it's a scam

Additional information: link

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

Average 30d PancakeSwap liquidity is low.

Average 30d PancakeSwap volume is low.

Average 30d number of PancakeSwap swaps is low.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find website, listings and other project-related information

Token is marked as scam (rug pull, honeypot, phishing, etc.)

Additional information: link

Young tokens have high risks of scam / price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank