CMERGE [Coin Merge] Token

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

CoinMerge.swapBack() (#514-552) sends eth to arbitrary user
Dangerous calls:
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in CoinMerge._tF(address,address,uint256) (#442-469):
External calls:
- swapBack() (#447)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#523-529)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
External calls sending eth:
- swapBack() (#447)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
State variables written after the call(s):
- _balances[s] = _balances[s].sub(amount,Insufficient Balance) (#451)
- _balances[r] = _balances[r].add(amountReceived) (#460)
- amountReceived = takeFee(s,amount) (#453)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#501)
Reentrancy in DividendDistributor.distributeDividend(address) (#274-286):
External calls:
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
State variables written after the call(s):
- shares[shareholder].totalRealised = shares[shareholder].totalRealised.add(amount) (#283)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#284)
Reentrancy in DividendDistributor.process(uint256) (#243-267):
External calls:
- distributeDividend(shareholders[currentIndex]) (#259)
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
State variables written after the call(s):
- currentIndex ++ (#264)
Reentrancy in DividendDistributor.setShare(address,uint256) (#220-234):
External calls:
- distributeDividend(shareholder) (#222)
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
State variables written after the call(s):
- shares[shareholder].amount = amount (#232)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#233)
Apply the check-effects-interactions pattern.

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.

DividendDistributor.distributeDividend(address) (#274-286) has external calls inside a loop: (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
Favor pull over push strategy for external calls.

Additional information: link

DividendDistributor.setDistributionCriteria(uint256,uint256) (#215-218) should emit an event for:
- minPeriod = _minPeriod (#216)
- minDistribution = _minDistribution (#217)
DividendDistributor.deposit() (#236-241) should emit an event for:
- dividendsPerShare = dividendsPerShare.add(dividendsPerShareAccuracyFactor.mul(amount).div(totalShares)) (#240)
CoinMerge.setInitialBlockLimit(uint256) (#562-565) should emit an event for:
- initialBlockLimit = blocks (#564)
CoinMerge.setBuyTxLimit(uint256) (#567-569) should emit an event for:
- _maxTxAmountBuy = amount (#568)
CoinMerge.setSellTxLimit(uint256) (#571-573) should emit an event for:
- _maxTxAmountSell = amount (#572)
CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256) (#610-619) should emit an event for:
- teamFee1 = _teamFee1 (#612)
- teamFee2 = _teamFee2 (#613)
- teamFee3 = _teamFee3 (#614)
- teamFee4 = _teamFee4 (#615)
- totalFee = _reflectionFee.add(_teamFee1).add(_teamFee2).add(_teamFee3).add(_teamFee4) (#616)
CoinMerge.setSwapBackSettings(bool,uint256) (#632-635) should emit an event for:
- swapThreshold = _amount (#634)
Emit an event for critical parameter changes.

Additional information: link

Auth.transferOwnership(address).adr (#92) lacks a zero-check on :
- owner = adr (#93)
CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet1 (#621) lacks a zero-check on :
- teamWallet1 = _teamWallet1 (#622)
CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet2 (#621) lacks a zero-check on :
- teamWallet2 = _teamWallet2 (#623)
CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet3 (#621) lacks a zero-check on :
- teamWallet3 = _teamWallet3 (#624)
CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet4 (#621) lacks a zero-check on :
- teamWallet4 = _teamWallet4 (#625)
Check that the address is not zero.

Additional information: link

Reentrancy in CoinMerge._tF(address,address,uint256) (#442-469):
External calls:
- swapBack() (#447)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#523-529)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
External calls sending eth:
- swapBack() (#447)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
State variables written after the call(s):
- launch() (#449)
- launchedAt = block.number (#559)
Reentrancy in CoinMerge.constructor() (#381-408):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WETH,address(this)) (#388)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = type()(uint256).max (#390)
- _balances[_presaler] = _totalSupply (#406)
- distributor = new DividendDistributor(address(router),WETH) (#392)
- isDividendExempt[pair] = true (#397)
- isDividendExempt[address(this)] = true (#398)
- isDividendExempt[DEAD] = true (#399)
- isFeeExempt[_presaler] = true (#394)
- isTxLimitExempt[_presaler] = true (#395)
- isTxLimitExempt[DEAD] = true (#396)
- teamWallet1 = 0xFa45B14B1D3C35545dEa86C92ac64eF93ddE50D1 (#401)
- teamWallet2 = 0xba583a8257818a2EDfd618fC252A5C7F7A9634c6 (#402)
- teamWallet3 = 0xa40d482D8e3bBF54579Ad8Dd8CcDf1FD995B25A3 (#403)
- teamWallet4 = 0xd071d62447293FDdD086B361AF3C8b072463B834 (#404)
Reentrancy in DividendDistributor.distributeDividend(address) (#274-286):
External calls:
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
State variables written after the call(s):
- shareholderClaims[shareholder] = block.timestamp (#282)
Reentrancy in DividendDistributor.setShare(address,uint256) (#220-234):
External calls:
- distributeDividend(shareholder) (#222)
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
State variables written after the call(s):
- addShareholder(shareholder) (#226)
- shareholderIndexes[shareholder] = shareholders.length (#308)
- removeShareholder(shareholder) (#228)
- shareholderIndexes[shareholders[shareholders.length - 1]] = shareholderIndexes[shareholder] (#314)
- addShareholder(shareholder) (#226)
- shareholders.push(shareholder) (#309)
- removeShareholder(shareholder) (#228)
- shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length - 1] (#313)
- shareholders.pop() (#315)
- totalShares = totalShares.sub(shares[shareholder].amount).add(amount) (#231)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in CoinMerge._tF(address,address,uint256) (#442-469):
External calls:
- swapBack() (#447)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#523-529)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
- distributor.setShare(s,_balances[s]) (#462)
- distributor.setShare(r,_balances[r]) (#463)
- distributor.process(distributorGas) (#465)
External calls sending eth:
- swapBack() (#447)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
Event emitted after the call(s):
- Transfer(s,r,amountReceived) (#467)
Reentrancy in CoinMerge._tF(address,address,uint256) (#442-469):
External calls:
- swapBack() (#447)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#523-529)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
External calls sending eth:
- swapBack() (#447)
- distributor.deposit{value: amountBNBReflection}() (#539)
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#502)
- amountReceived = takeFee(s,amount) (#453)
Reentrancy in CoinMerge.constructor() (#381-408):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WETH,address(this)) (#388)
Event emitted after the call(s):
- Transfer(address(0),_presaler,_totalSupply) (#407)
Apply the check-effects-interactions pattern.

Additional information: link

DividendDistributor.shouldDistribute(address) (#269-272) uses timestamp for comparisons
Dangerous comparisons:
- shareholderClaims[shareholder] + minPeriod < block.timestamp && getUnpaidEarnings(shareholder) > minDistribution (#270-271)
Avoid relying on block.timestamp.

Additional information: link

DividendDistributor.process(uint256) (#243-267) has costly operations inside a loop:
- currentIndex = 0 (#255)
DividendDistributor.distributeDividend(address) (#274-286) has costly operations inside a loop:
- totalDistributed = totalDistributed.add(amount) (#279)
DividendDistributor.process(uint256) (#243-267) has costly operations inside a loop:
- currentIndex ++ (#264)
Use a local variable to hold the loop computation result.

Additional information: link

CoinMerge._maxTxAmountBuy (#340) is set pre-construction with a non-constant function or state variable:
- _totalSupply
CoinMerge._maxTxAmountSell (#341) is set pre-construction with a non-constant function or state variable:
- _totalSupply
CoinMerge.swapThreshold (#377) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 5000
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

Low level call in DividendDistributor.distributeDividend(address) (#274-286):
- (successShareholder) = address(shareholder).call{gas: 30000,value: amount}() (#280)
Low level call in CoinMerge.swapBack() (#514-552):
- (successTeam1) = address(teamWallet1).call{gas: 30000,value: amountBNBTeam1}() (#541)
- (successTeam2) = address(teamWallet2).call{gas: 30000,value: amountBNBTeam2}() (#544)
- (successTeam3) = address(teamWallet3).call{gas: 30000,value: amountBNBTeam3}() (#547)
- (successTeam4) = address(teamWallet4).call{gas: 30000,value: amountBNBTeam4}() (#550)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IDEXRouter.WETH() (#106) is not in mixedCase
Parameter DividendDistributor.setDistributionCriteria(uint256,uint256)._minPeriod (#215) is not in mixedCase
Parameter DividendDistributor.setDistributionCriteria(uint256,uint256)._minDistribution (#215) is not in mixedCase
Parameter DividendDistributor.setDividendToken(address)._dividendToken (#318) is not in mixedCase
Variable DividendDistributor._token (#163) is not in mixedCase
Variable DividendDistributor.WETH (#174) is not in mixedCase
Parameter CoinMerge.setBot(address,bool)._address (#579) is not in mixedCase
Parameter CoinMerge.isInBot(address)._address (#584) is not in mixedCase
Parameter CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256)._reflectionFee (#610) is not in mixedCase
Parameter CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256)._teamFee1 (#610) is not in mixedCase
Parameter CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256)._teamFee2 (#610) is not in mixedCase
Parameter CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256)._teamFee3 (#610) is not in mixedCase
Parameter CoinMerge.setFees(uint256,uint256,uint256,uint256,uint256)._teamFee4 (#610) is not in mixedCase
Parameter CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet1 (#621) is not in mixedCase
Parameter CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet2 (#621) is not in mixedCase
Parameter CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet3 (#621) is not in mixedCase
Parameter CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet4 (#621) is not in mixedCase
Parameter CoinMerge.setSwapBackSettings(bool,uint256)._enabled (#632) is not in mixedCase
Parameter CoinMerge.setSwapBackSettings(bool,uint256)._amount (#632) is not in mixedCase
Parameter CoinMerge.setDistributionCriteria(uint256,uint256)._minPeriod (#637) is not in mixedCase
Parameter CoinMerge.setDistributionCriteria(uint256,uint256)._minDistribution (#637) is not in mixedCase
Variable CoinMerge.WETH (#331) is not in mixedCase
Variable CoinMerge.DEAD (#332) is not in mixedCase
Variable CoinMerge.ZERO (#333) is not in mixedCase
Constant CoinMerge._name (#335) is not in UPPER_CASE_WITH_UNDERSCORES
Constant CoinMerge._symbol (#336) is not in UPPER_CASE_WITH_UNDERSCORES
Constant CoinMerge._decimals (#337) is not in UPPER_CASE_WITH_UNDERSCORES
Variable CoinMerge._totalSupply (#339) is not in mixedCase
Variable CoinMerge._maxTxAmountBuy (#340) is not in mixedCase
Variable CoinMerge._maxTxAmountSell (#341) is not in mixedCase
Variable CoinMerge._maxWalletToken (#343) is not in mixedCase
Variable CoinMerge._balances (#345) is not in mixedCase
Variable CoinMerge._allowances (#346) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#111) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#112)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet1 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet2 (#621)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet1 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet3 (#621)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet1 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet4 (#621)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet2 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet3 (#621)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet2 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet4 (#621)
Variable CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet3 (#621) is too similar to CoinMerge.setFeeReceivers(address,address,address,address)._teamWallet4 (#621)
Variable CoinMerge.swapBack().amountBNBTeam1 (#532) is too similar to CoinMerge.swapBack().amountBNBTeam2 (#533)
Variable CoinMerge.swapBack().amountBNBTeam1 (#532) is too similar to CoinMerge.swapBack().amountBNBTeam3 (#534)
Variable CoinMerge.swapBack().amountBNBTeam1 (#532) is too similar to CoinMerge.swapBack().amountBNBTeam4 (#535)
Variable CoinMerge.swapBack().amountBNBTeam2 (#533) is too similar to CoinMerge.swapBack().amountBNBTeam3 (#534)
Variable CoinMerge.swapBack().amountBNBTeam2 (#533) is too similar to CoinMerge.swapBack().amountBNBTeam4 (#535)
Variable CoinMerge.swapBack().amountBNBTeam3 (#534) is too similar to CoinMerge.swapBack().amountBNBTeam4 (#535)
Variable CoinMerge.swapBack().successTeam1 (#541) is too similar to CoinMerge.swapBack().successTeam2 (#544)
Variable CoinMerge.swapBack().successTeam1 (#541) is too similar to CoinMerge.swapBack().successTeam3 (#547)
Variable CoinMerge.swapBack().successTeam1 (#541) is too similar to CoinMerge.swapBack().successTeam4 (#550)
Variable CoinMerge.swapBack().successTeam2 (#544) is too similar to CoinMerge.swapBack().successTeam3 (#547)
Variable CoinMerge.swapBack().successTeam2 (#544) is too similar to CoinMerge.swapBack().successTeam4 (#550)
Variable CoinMerge.swapBack().successTeam3 (#547) is too similar to CoinMerge.swapBack().successTeam4 (#550)
Variable CoinMerge.teamWallet1 (#363) is too similar to CoinMerge.teamWallet2 (#364)
Variable CoinMerge.teamWallet1 (#363) is too similar to CoinMerge.teamWallet3 (#365)
Variable CoinMerge.teamWallet1 (#363) is too similar to CoinMerge.teamWallet4 (#366)
Variable CoinMerge.teamWallet2 (#364) is too similar to CoinMerge.teamWallet3 (#365)
Variable CoinMerge.teamWallet2 (#364) is too similar to CoinMerge.teamWallet4 (#366)
Variable CoinMerge.teamWallet3 (#365) is too similar to CoinMerge.teamWallet4 (#366)
Prevent variables from having similar names.

Additional information: link

DividendDistributor.slitherConstructorVariables() (#160-326) uses literals with too many digits:
- minDistribution = 1000000 * (10 ** 9) (#189)
CoinMerge.slitherConstructorVariables() (#328-650) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#332)
CoinMerge.slitherConstructorVariables() (#328-650) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#333)
CoinMerge.slitherConstructorVariables() (#328-650) uses literals with too many digits:
- _totalSupply = 5000000000 * (10 ** _decimals) (#339)
CoinMerge.slitherConstructorVariables() (#328-650) uses literals with too many digits:
- distributorGas = 500000 (#374)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

CoinMerge.DEAD (#332) should be constant
CoinMerge.ZERO (#333) should be constant
CoinMerge._totalSupply (#339) should be constant
CoinMerge.feeDenominator (#361) should be constant
DividendDistributor.dividendsPerShareAccuracyFactor (#186) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

transferOwnership(address) should be declared external:
- Auth.transferOwnership(address) (#92-95)
isInBot(address) should be declared external:
- CoinMerge.isInBot(address) (#584-586)
getFees() should be declared external:
- CoinMerge.getFees() (#628-630)
getCirculatingSupply() should be declared external:
- CoinMerge.getCirculatingSupply() (#646-648)
Use the external attribute for functions never called from the contract.

Additional information: link

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute number of swaps.

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 verify token contract address on the website

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

Unable to find token on CoinHunt

Additional information: link

Young tokens have high risks of scam / 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