Is SIREN Safe? Smart Contract Security Analysis

Security Findings

1 High2 Info

High

Renounced Ownership Disables Critical Functions

H-01The contract's `Ownable` ownership has been renounced, setting the owner address to `address(0)`. This action permanently disables any functions protected by the `onlyOwner` modifier. If the contract included owner-specific functionalities such as minting, burning, pausing, setting fees, or other administrative controls, these are now irrevocably inaccessible. This can lead to a loss of operational control (7.8) and potentially impact the economic model (7.4) if supply management or emergency actions were intended.

IssueThe contract's `Ownable` ownership has been renounced, setting the owner address to `address(0)`. This action permanently disables any functions protected by the `onlyOwner` modifier. If the contract included owner-specific functionalities such as minting, burning, pausing, setting fees, or other administrative controls, these are now irrevocably inaccessible. This can lead to a loss of operational control (7.8) and potentially impact the economic model (7.4) if supply management or emergency actions were intended.

FixEnsure that all necessary administrative functions are either not protected by `onlyOwner` or that the implications of their permanent disablement are fully understood and accepted. If future administrative actions are required, this contract will be unable to perform them. For future contracts, consider a multi-signature wallet or a time-locked ownership transfer if administrative control is desired but with safeguards.

StatusUnresolved

Info

Missing Custom Functionality (Truncated Code)

I-01The provided source code for the `ERC20` contract is truncated. This prevents a full and comprehensive review of any custom logic, additional functions, or modifications that might have been added beyond the standard OpenZeppelin `ERC20` implementation. While the visible code appears standard, unseen sections could contain vulnerabilities (7.2) or unexpected behavior.

IssueThe provided source code for the `ERC20` contract is truncated. This prevents a full and comprehensive review of any custom logic, additional functions, or modifications that might have been added beyond the standard OpenZeppelin `ERC20` implementation. While the visible code appears standard, unseen sections could contain vulnerabilities (7.2) or unexpected behavior.

FixProvide the complete and untruncated source code for a comprehensive security audit. This ensures all aspects of the contract's functionality can be thoroughly examined for vulnerabilities.

StatusUnresolved

Info

Standard ERC20 Allowance Race Condition

I-02The `approve` function, as defined in the ERC20 standard and implemented here, is susceptible to a known front-running vulnerability. If a user increases an existing allowance, a malicious spender could front-run the transaction, spend the original allowance, and then spend the newly increased allowance before the owner's transaction confirms, effectively spending more than the intended total (7.2).

IssueThe `approve` function, as defined in the ERC20 standard and implemented here, is susceptible to a known front-running vulnerability. If a user increases an existing allowance, a malicious spender could front-run the transaction, spend the original allowance, and then spend the newly increased allowance before the owner's transaction confirms, effectively spending more than the intended total (7.2).

FixUsers should be advised to first set the allowance to zero before increasing it, or to use `increaseAllowance` and `decreaseAllowance` functions if they are available in the full implementation (OpenZeppelin's ERC20 typically includes these). While this is a standard ERC20 behavior, it's important for users to be aware of the risk.

StatusUnresolved

Category Ratings

TechnicalLow9/10

The contract is based on well-vetted OpenZeppelin ERC20 and Ownable libraries, which generally provide robust code security (7.2) and a sound architectural foundation (7.1). Solidity 0.8+ is used, benefiting from default overflow/underflow checks. However, the renounced ownership (7.3) means any owner-only functions, such as potential administrative controls or supply management, are permanently inaccessible, which is a significant technical limitation.

GovernanceMedium4/10

The economic model (7.4) is a standard ERC20 token. The governance (7.5) is effectively decentralized due to the renounced ownership, meaning no single entity can control the contract post-deployment. While this removes centralization risk, it also eliminates any possibility for administrative intervention, such as pausing transfers in an emergency or adjusting token parameters, which could be a significant economic and operational risk (7.8) if such capabilities were ever intended or become necessary.

UpgradesLow9/10

The contract is not designed as an upgradeable proxy (7.7). This means its logic is immutable once deployed, eliminating upgrade-related risks like proxy misconfigurations or malicious upgrade paths. However, it also means that any bugs or desired feature changes cannot be implemented without a new deployment.

Security Checklist

4/5 checks passed

Contract VerifiedPass

Ownership RenouncedPass

No Mint FunctionPass

Liquidity LockedFail

Not a ProxyPass

Holder Composition

81.2% in top 10

33.0% in wallets48.2% in contracts

Effective Concentration52.3%

Share held by contracts — treasury, vesting, bridge or staking — is discounted against share held by wallets when the score is computed: a contract cannot decide to sell the way an anonymous holder can, though it can still be drained or voted to sell. Effective concentration is the figure the risk score is actually calculated from.

Liquidity Depth

$2.36M across 11 pairs

Pancakeswap v3WBNBanalysed$2.34M UniswapUSDT$19.5K Pancakeswap v3USDC$4.3K Pancakeswap v3WBNB$581 Pancakeswap v3USDT$362 Pancakeswap v3USDT$262

Show 4 more pairsShow less

Pancakeswap v2WBNB$247 Pancakeswap v2USDT$35 Pancakeswap v2WUKONG$31 TopazWBNB$11

One more pair holds $4 and is not listed.

The risk score reads depth across every pair. The volume figure and the volume-to-liquidity ratio elsewhere on this page describe only the pair this audit analysed, so the two are not directly comparable.

LP Distribution

Top-1 Unlocked Holder71.2%

Top-3 Unlocked84.2%

Key Addresses

11 addresses

Deployer

0x080a…e4ea

Unlocked LP Held By

0xd7ea…9c2e0xabe1…e0bf0x483c…71870xbee9…8e770x3cbc…57330xd379…60d80xd65d…769c0x3f2d…dd0c0xd329…9cec0xecee…ebc4

No privileged address appears among these holders: the unlocked liquidity sits with independent providers, not with the deployer.

What Raised This Score

5 factors

Top-10 concentration > 50% (81.2% total → 52.3% effective; 33.0% in EOAs, 48.2% in contracts — heavy)
Liquidity not locked, but no owner/deployer address holds LP — market-depth risk, not rug risk
LP top1 unlocked holder = 71.2% (independent LP — depth risk, pool = 99% of DEX liquidity)
LP top3 unlocked holders = 84.2% (independent LP — depth risk, pool = 99% of DEX liquidity)
1 High finding(s) from audit

Each factor is an on-chain fact recorded at the time of this analysis. The score is computed from them by a deterministic function, so the same contract returns the same score for anyone who runs the audit. How scores are computed

Is SIREN Safe?

Security Findings

Renounced Ownership Disables Critical Functions

Missing Custom Functionality (Truncated Code)

Standard ERC20 Allowance Race Condition

Category Ratings

Security Checklist

Holder Composition

Liquidity Depth

LP Distribution

Key Addresses

What Raised This Score

Frequently Asked Questions

Related Audits

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