PANTHER [PantherSwap] Token

PantherToken.addLiquidity(uint256,uint256) (#1321-1334) sends eth to arbitrary user
Dangerous calls:
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in PantherToken._transfer(address,address,uint256) (#1235-1266):
External calls:
- swapAndLiquify() (#1245)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
- pantherSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1311-1317)
External calls sending eth:
- swapAndLiquify() (#1245)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#1249)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#1056)
- _balances[recipient] = _balances[recipient].add(amount) (#1057)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#1261)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#1056)
- _balances[recipient] = _balances[recipient].add(amount) (#1057)
- super._transfer(sender,address(this),liquidityAmount) (#1262)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#1056)
- _balances[recipient] = _balances[recipient].add(amount) (#1057)
- super._transfer(sender,recipient,sendAmount) (#1263)
- _balances[sender] = _balances[sender].sub(amount,BEP20: transfer amount exceeds balance) (#1056)
- _balances[recipient] = _balances[recipient].add(amount) (#1057)
Apply the check-effects-interactions pattern.

Additional information: link

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

PantherToken._writeCheckpoint(address,uint32,uint256,uint256) (#1636-1654) uses a dangerous strict equality:
- nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber (#1646)
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.

PantherToken._transfer(address,address,uint256) (#1235-1266) performs a multiplication on the result of a division:
-taxAmount = amount.mul(transferTaxRate).div(10000) (#1252)
-burnAmount = taxAmount.mul(burnRate).div(100) (#1253)
Consider ordering multiplication before division.

Additional information: link

PantherToken.addLiquidity(uint256,uint256) (#1321-1334) ignores return value by pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
Ensure that all the return values of the function calls are used.

Additional information: link

BEP20.allowance(address,address).owner (#939) shadows:
- Ownable.owner() (#784-786) (function)
BEP20.constructor(string,string).symbol (#875) shadows:
- BEP20.symbol() (#905-907) (function)
- IBEP20.symbol() (#645) (function)
BEP20._approve(address,address,uint256).owner (#1111) shadows:
- Ownable.owner() (#784-786) (function)
BEP20.constructor(string,string).name (#875) shadows:
- BEP20.name() (#891-893) (function)
- IBEP20.name() (#650) (function)
PantherToken.swapAndLiquify().maxTransferAmount (#1271) shadows:
- PantherToken.maxTransferAmount() (#1339-1341) (function)
Rename the local variables that shadow another component.

Additional information: link

PantherToken.delegateBySig(address,uint256,uint256,uint8,bytes32,bytes32) (#1502-1543) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now <= expiry,PANTHER::delegateBySig: signature expired) (#1541)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#247-256) uses assembly
- INLINE ASM (#254)
Address._verifyCallResult(bool,bytes,string) (#392-409) uses assembly
- INLINE ASM (#401-404)
PantherToken.getChainId() (#1661-1665) uses assembly
- INLINE ASM (#1663)
Do not use evm assembly.

Additional information: link

PantherToken._transfer(address,address,uint256) (#1235-1266) compares to a boolean constant:
-swapAndLiquifyEnabled == true && _inSwapAndLiquify == false && address(pantherSwapRouter) != address(0) && pantherSwapPair != address(0) && sender != pantherSwapPair && sender != owner() (#1238-1243)
PantherToken.antiWhale(address,address,uint256) (#1190-1200) compares to a boolean constant:
-_excludedFromAntiWhale[sender] == false && _excludedFromAntiWhale[recipient] == false (#1193-1194)
Remove the equality to the boolean constant.

Additional information: link

Different versions of Solidity are used:
- Version used: ['0.6.12', '>=0.4.0', '>=0.5.0', '>=0.6.0<0.8.0', '>=0.6.2', '>=0.6.2<0.8.0']
- >=0.5.0 (#5)
- >=0.5.0 (#25)
- >=0.6.2 (#80)
- >=0.6.2 (#178)
- >=0.6.2<0.8.0 (#224)
- >=0.6.0<0.8.0 (#414)
- >=0.4.0 (#629)
- >=0.6.0<0.8.0 (#728)
- >=0.6.0<0.8.0 (#753)
- >=0.4.0 (#821)
- 0.6.12 (#1140)
Use one Solidity version.

Additional information: link

Pragma version>=0.5.0 (#5) allows old versions
Pragma version>=0.6.0<0.8.0 (#753) is too complex
Pragma version>=0.4.0 (#629) allows old versions
Pragma version>=0.6.0<0.8.0 (#728) is too complex
Pragma version>=0.5.0 (#25) allows old versions
Pragma version>=0.6.2 (#178) allows old versions
Pragma version>=0.4.0 (#821) allows old versions
Pragma version>=0.6.0<0.8.0 (#414) is too complex
Pragma version>=0.6.2<0.8.0 (#224) is too complex
Pragma version>=0.6.2 (#80) 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

Redundant expression "this (#746)" inContext (#740-749)
Remove redundant statements if they congest code but offer no value.

Additional information: link

transferOperator(address) should be declared external:
- PantherToken.transferOperator(address) (#1431-1435)
transfer(address,uint256) should be declared external:
- BEP20.transfer(address,uint256) (#931-934)
isExcludedFromAntiWhale(address) should be declared external:
- PantherToken.isExcludedFromAntiWhale(address) (#1346-1348)
symbol() should be declared external:
- BEP20.symbol() (#905-907)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#803-806)
mint(address,uint256) should be declared external:
- PantherToken.mint(address,uint256) (#1229-1232)
approve(address,uint256) should be declared external:
- BEP20.approve(address,uint256) (#950-953)
updateSwapAndLiquifyEnabled(bool) should be declared external:
- PantherToken.updateSwapAndLiquifyEnabled(bool) (#1404-1407)
updateMinAmountToLiquify(uint256) should be declared external:
- PantherToken.updateMinAmountToLiquify(uint256) (#1387-1390)
transferFrom(address,address,uint256) should be declared external:
- BEP20.transferFrom(address,address,uint256) (#967-979)
updateTransferTaxRate(uint16) should be declared external:
- PantherToken.updateTransferTaxRate(uint16) (#1357-1361)
updateBurnRate(uint16) should be declared external:
- PantherToken.updateBurnRate(uint16) (#1367-1371)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#812-816)
mint(uint256) should be declared external:
- BEP20.mint(uint256) (#1029-1032)
setExcludedFromAntiWhale(address,bool) should be declared external:
- PantherToken.setExcludedFromAntiWhale(address,bool) (#1396-1398)
updateMaxTransferAmountRate(uint16) should be declared external:
- PantherToken.updateMaxTransferAmountRate(uint16) (#1377-1381)
allowance(address,address) should be declared external:
- BEP20.allowance(address,address) (#939-941)
updatePantherSwapRouter(address) should be declared external:
- PantherToken.updatePantherSwapRouter(address) (#1413-1418)
decimals() should be declared external:
- BEP20.decimals() (#898-900)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#993-996)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#1012-1019)
Use the external attribute for functions never called from the contract.

Additional information: link

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

Reentrancy in PantherToken.swapAndLiquify() (#1269-1299):
External calls:
- swapTokensForEth(half) (#1289)
- pantherSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1311-1317)
- addLiquidity(otherHalf,newBalance) (#1295)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1295)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1295)
- _allowances[owner][spender] = amount (#1118)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in PantherToken._transfer(address,address,uint256) (#1235-1266):
External calls:
- swapAndLiquify() (#1245)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
- pantherSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1311-1317)
External calls sending eth:
- swapAndLiquify() (#1245)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#1058)
- super._transfer(sender,BURN_ADDRESS,burnAmount) (#1261)
- Transfer(sender,recipient,amount) (#1058)
- super._transfer(sender,recipient,amount) (#1249)
- Transfer(sender,recipient,amount) (#1058)
- super._transfer(sender,recipient,sendAmount) (#1263)
- Transfer(sender,recipient,amount) (#1058)
- super._transfer(sender,address(this),liquidityAmount) (#1262)
Reentrancy in PantherToken.swapAndLiquify() (#1269-1299):
External calls:
- swapTokensForEth(half) (#1289)
- pantherSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1311-1317)
- addLiquidity(otherHalf,newBalance) (#1295)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1295)
- pantherSwapRouter.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,operator(),block.timestamp) (#1326-1333)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1119)
- addLiquidity(otherHalf,newBalance) (#1295)
- SwapAndLiquify(half,newBalance,otherHalf) (#1297)
Apply the check-effects-interactions pattern.

Additional information: link

SafeMath.tryDiv(uint256,uint256) (#471-474) is never used and should be removed
Address.sendValue(address,uint256) (#274-280) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#325-327) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#481-484) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#384-390) is never used and should be removed
BEP20._burnFrom(address,uint256) (#1128-1135) is never used and should be removed
BEP20._burn(address,uint256) (#1089-1095) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#374-376) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#435-439) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#621-624) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#335-342) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#601-604) is never used and should be removed
Context._msgData() (#745-748) is never used and should be removed
Address.functionStaticCall(address,bytes) (#350-352) is never used and should be removed
SafeMath.mod(uint256,uint256) (#563-566) is never used and should be removed
Address._verifyCallResult(bool,bytes,string) (#392-409) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#456-464) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#446-449) is never used and should be removed
Address.isContract(address) (#247-256) is never used and should be removed
Address.functionCall(address,bytes,string) (#310-312) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#360-366) is never used and should be removed
Address.functionCall(address,bytes) (#300-302) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.functionStaticCall(address,bytes,string) (#360-366):
- (success,returndata) = target.staticcall(data) (#364)
Low level call in Address.functionDelegateCall(address,bytes,string) (#384-390):
- (success,returndata) = target.delegatecall(data) (#388)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#335-342):
- (success,returndata) = target.call{value: value}(data) (#340)
Low level call in Address.sendValue(address,uint256) (#274-280):
- (success) = recipient.call{value: amount}() (#278)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Parameter PantherToken.isExcludedFromAntiWhale(address)._account (#1346) is not in mixedCase
Variable PantherToken._delegates (#1444) is not in mixedCase
Parameter PantherToken.setExcludedFromAntiWhale(address,bool)._excluded (#1396) is not in mixedCase
Parameter PantherToken.updateMinAmountToLiquify(uint256)._minAmount (#1387) is not in mixedCase
Parameter PantherToken.setExcludedFromAntiWhale(address,bool)._account (#1396) is not in mixedCase
Parameter PantherToken.updatePantherSwapRouter(address)._router (#1413) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#43) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#60) is not in mixedCase
Parameter PantherToken.updateSwapAndLiquifyEnabled(bool)._enabled (#1404) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#42) is not in mixedCase
Parameter PantherToken.updateMaxTransferAmountRate(uint16)._maxTransferAmountRate (#1377) is not in mixedCase
Function IUniswapV2Router01.WETH() (#84) is not in mixedCase
Parameter PantherToken.mint(address,uint256)._amount (#1229) is not in mixedCase
Parameter PantherToken.mint(address,uint256)._to (#1229) is not in mixedCase
Parameter PantherToken.updateTransferTaxRate(uint16)._transferTaxRate (#1357) is not in mixedCase
Parameter PantherToken.updateBurnRate(uint16)._burnRate (#1367) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#89) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#90)
Prevent variables from having similar names.

Additional information: link

PantherToken.slitherConstructorConstantVariables() (#1147-1667) uses literals with too many digits:
- BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD (#1155)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.

Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.

Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

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

Token is deployed only at one blockchain

Contract has 2% buy tax and 1% sell tax.
Taxes are low and contract ownership is renounced.

Unable to crawl data from the website

Token was delisted (assigned to inactive / untracked listing) from CoinMarketCap

Additional information: link

Token is not listed at Mobula.Finance

Additional information: link

Token has a considerable age, but we're still unable to find its website

Token has no active CoinMarketCap listing / rank

Token has a considerable age, but social accounts / website are missing or have few users

Token has a considerable age, but average PancakeSwap 30d trading volume is low

Token has relatively low CoinGecko rank