Optimism Smart Contracts Audit
OpenZeppelin reviewed Optimism (Optimism Smart Contracts Audit) on 24 Nov 2021: 34 findings, 4 critical; 10 marked fixed, 24 open.
4 critical findings, fixed
Open the reportOpen Optimism’s security record
Report hosted on blog.openzeppelin.com.
Statuses are the security firm’s own, from this report. Trustblock does not review code.
Findings34
Statuses are the security firm’s own, from its report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 4 |
| High | 1 | 0 | 4 |
| Medium | 3 | 0 | 2 |
| Low | 20 | 0 | 0 |
No acknowledged finding in this report.
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 (19)
- contracts/optimistic-ethereum/libraries/bridge/OVM_CrossDomainEnabled.sol
- contracts/optimistic-ethereum/iOVM/chain/iOVM_ChainStorageContainer.sol
- contracts/optimistic-ethereum/libraries/utils/Lib_MerkleTree.sol
- contracts/optimistic-ethereum/OVM/execution/OVM_SafetyChecker.sol
- contracts/optimistic-ethereum/libraries/utils/Lib_RingBuffer.sol
- contracts/optimistic-ethereum/OVM/precompiles/OVM_L2ToL1MessagePasser.sol
- contracts/optimistic-ethereum/libraries/utils/Lib_Math.sol
- contracts/optimistic-ethereum/OVM/bridge/tokens/OVM_L1ERC20Gateway.sol
- contracts/optimistic-ethereum/OVM/execution/OVM_ExecutionManager.sol
- contracts/optimistic-ethereum/OVM/bridge/messaging/OVM_L1CrossDomainMessenger.sol
- contracts/optimistic-ethereum/OVM/precompiles/OVM_DeployerWhitelist.sol
- contracts/optimistic-ethereum/OVM/verification/OVM_StateTransitioner.sol
- contracts/optimistic-ethereum/OVM/bridge/tokens/Abs_L1TokenGateway.sol
- contracts/optimistic-ethereum/libraries/rlp/Lib_RLPReader.sol
- contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol
- contracts/optimistic-ethereum/libraries/trie/Lib_MerkleTrie.sol
- contracts/optimistic-ethereum/OVM/verification/OVM_BondManager.sol
- contracts/optimistic-ethereum/OVM/precompiles/ERC1820Registry.sol
- contracts/optimistic-ethereum/OVM/verification/OVM_FraudVerifier.sol
Part of Optimism’s security record
OptimismAudits2 audits by 2 firmsLast audit Nov 2021, by OpenZeppelin.
Critical findingsNo open critical findingsAcross the 2 reports, 4 critical findings were reported. Each is marked fixed by the firm that reported it.
Open Optimism’s security recordSecurity firm
OpenZeppelin67 projects reviewed · 185 reports · latest Aug 2026
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