Sweep n Flip security record

Arbitrum, Base, Ethereum, Polygon (POS)sweepnflip.io

As of 21 Oct 2026, Sweep n Flip has 2 audit reports by 1 security firm on Trustblock; the latest is by Cantina, dated 16 Jan 2025. Those reports list 2 criticals acknowledged and not fixed.

Critical findings
2 criticals acknowledged, not fixed
Reported in “Sweep-n-flip Bridge” by Cantina, Jan 2025. The team acknowledged both. See the findings
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Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Trustblock does not review code.

Audits2

Newest first

AuditSecurity firmDateScopeCritical findingsReport
sweep-n-flip-nft-ammSecurity firm: CantinaDate: Scope: Not recorded (see the report)No open critical findingsOpen · cantina.xyz
Sweep-n-flip BridgeSecurity firm: CantinaDate: Scope: Not recorded (see the report)2 criticals acknowledged, not fixedOpen · cantina.xyz

Findings48

Statuses are the security firm’s own, from each report.

SeverityOpenAcknowledgedFixed
Critical020
High003
Medium063
Low0259
CriticalLayerZeroAdapter::executeMessages could lead to irrecoverable stateSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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CriticalPermanent failure to bridge wrapped ERC721 using Bridge::sendERC721UsingNative functionSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumBroken protocol invariant: Decreasing WERC721 totalSupply without unlocking different NFTssweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumDOMAIN_SEPARATOR in UniswapV2ERC20 will be invalid after chain forkssweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumIncorrect handling of Velodrome stable poolssweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumPrivileged role and actions lead to centralization risks for userssweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumPrivileged role and actions lead to centralization risks for usersSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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MediumRevert on swaps involving non-delegated ERC721 pairs through RouterCollectionsweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowBridge.sol is incompatible with multi-chain ERC-721 contractsSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowCode quality issues: function orderingSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowCode quality issues: remove unused function parameterSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowCode quality issues: unused ExcessivelySafeCall librarySweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowCode quality issues: unused imports (or) codeSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowCombine checkEvmChainSettingsAdapter and checkEvmChainSettingsIsEnabled to improve gas efficiencySweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowEmit events if a function alters storage variablessweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowEmit events if a function alters storage variablesSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowERC20 swaps are allowed on SwipNFlip pools without NFT retrievalSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowImprove inline documentationSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowIncrease test coverageSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowLack of marketplace fee sanity check on constructorsweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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Lowmemory can be changed to calldata to save gasSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowMissing events and sanity checks in Bridge.sol state changing functionsSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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Lowname(), symbol() and tokenURI() are optional functions, per the ERC-721 standardSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowNarrow redemption range and inflexible ID requirements in removeLiquidityCollectionsweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowPotential risks in updateAdmin function in UniswapV2Router01Collection.solsweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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Lows_bridgeAddress could be made immutableSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUnnecessary local contract duplication of LayerZero OApp contractsSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUnnecessary use of tryDiv for division with a constantSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUnsafe casting of uint256 to uint32 in LayerZeroAdapter.solSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUse _safeMint instead of _mint in WERC721 contractSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUse safeTransferFrom instead of transferFrom to transfer NFTssweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowUse safeTransferFrom instead of transferFrom to transfer NFTsSweep-n-flip Bridge · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

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LowWeak role management and lack of robust access control in UniswapV2Factory.solsweep-n-flip-nft-amm · Cantina · 16 Jan 2025Acknowledged

The report gives no description here.

Open the report

Contracts

No deployed address is recorded for these audits.

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