Land and Tunnel Audit

OpenZeppelin9 Aug 2023Files named in the report

Audit · firm’s term: audit

OpenZeppelin reviewed The Sandbox (Land and Tunnel Audit) on 9 Aug 2023: 12 findings, 0 critical; 10 marked fixed, 1 acknowledged, 1 open.

No open critical findings

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Report hosted on blog.openzeppelin.com.

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Findings12

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

Severity	Open	Acknowledged	Fixed
Critical	0	0	0
High	0	0	1
Medium	0	0	2
Low	1	1	7

LowLack of input validationOpen

The report gives no description here.

Contracts in scope

No deployed address is recorded for this audit.

The report names a repository or files. Open the report to see its scope.

Repository and files the report names (39)

src/solc_0.8/common/interfaces/IPolygonLand.sol
src/solc_0.5/contracts_common/Interfaces/ERC721TokenReceiver.sol
src/solc_0.8.15/common/OperatorFilterer/IOperatorFilterRegistry.sol
src/solc_0.8/common/interfaces/IPolygonLandWithSetApproval.sol
src/solc_0.8/polygon/child/land/PolygonLandTunnelV2.sol
src/solc_0.8/common/BaseWithStorage/ERC721BaseTokenV2.sol
src/solc_0.8/polygon/root/land/LandTunnelMigration.sol
src/solc_0.8/common/interfaces/IPolygonLandTunnel.sol
src/solc_0.8/polygon/child/land/PolygonLandBaseTokenV2.sol
src/solc_0.5/OperatorFilterer/contracts/upgradeable/OperatorFiltererUpgradeable.sol
src/solc_0.5/contracts_common/Interfaces/ERC721MandatoryTokenReceiver.sol
src/solc_0.5/OperatorFilterer/interfaces/IOperatorFilterRegistry.sol
src/solc_0.8/OperatorFilterer/interfaces/IOperatorFilterRegistry.sol
src/solc_0.5/contracts_common/BaseWithStorage/SuperOperatorsV2.sol
src/solc_0.8/common/interfaces/ILandTokenV2.sol
src/solc_0.8/common/interfaces/IERC721MandatoryTokenReceiver.sol
src/solc_0.8/polygon/child/land/PolygonLandTunnelMigration.sol
src/solc_0.8/OperatorFilterer/contracts/upgradeable/OperatorFiltererUpgradeable.sol
src/solc_0.8/common/interfaces/IPolygonLandV2.sol
src/solc_0.5/contracts_common/BaseWithStorage/MetaTransactionReceiverV2.sol
src/solc_0.8/common/fx-portal/FxBaseRootTunnelUpgradeable.sol
src/solc_0.8/polygon/child/land/PolygonLandV2.sol
src/solc_0.5/BaseWithStorage/ERC2771Handler.sol
src/solc_0.5/LandV3.sol
src/solc_0.6/common/Libraries/AddressUtils.sol
src/solc_0.8/polygon/root/land/LandTunnelV2.sol
src/solc_0.5/contracts_common/Libraries/AddressUtils.sol
src/solc_0.8/common/BaseWithStorage/WithSuperOperatorsV2.sol
src/solc_0.5/Land/erc721/ERC721BaseTokenV2.sol
src/solc_0.5/Land/erc721/LandBaseTokenV3.sol
src/solc_0.8/common/interfaces/ILandToken.sol
src/solc_0.6/common/Interfaces/ERC721Events.sol
src/solc_0.6/common/Interfaces/ERC721TokenReceiver.sol
src/solc_0.8/common/fx-portal/FxBaseChildTunnelUpgradeable.sol
src/solc_0.8/common/BaseWithStorage/WithAdminV2.sol
src/solc_0.5/contracts_common/Interfaces/ERC721Events.sol
src/solc_0.6/EstateSale/ILandToken.sol
src/solc_0.6/common/Interfaces/ERC721MandatoryTokenReceiver.sol
src/solc_0.8/common/BaseWithStorage/ERC2771Handler.sol

Part of The Sandbox’s security record

The Sandbox

Audits8 audits by 2 firmsLast audit Aug 2023, by OpenZeppelin.

Critical findingsNo open critical findingsAcross the 8 reports, 1 critical finding was reported. It is marked fixed by the firm that reported it.

Open The Sandbox’s security record

Security firm

OpenZeppelin

67 projects reviewed · 184 reports · latest Aug 2026

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