zkSync Fee Model and Token Bridge Audit

OpenZeppelinFiles named in the report

Audit · firm’s term: audit

Part of OpenZeppelin’s series

OpenZeppelin reviewed ZKsync (zkSync Fee Model and Token Bridge Audit) on 9 Mar 2023: 14 findings, 0 critical; 10 marked fixed, 2 acknowledged, 2 open.

No open critical findings
Open the reportOpen ZKsync’s security record

Report hosted on blog.openzeppelin.com.

Trustblock does not review code.

Findings14

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

SeverityOpenAcknowledgedFixed
Critical000
High001
Medium122
Low107
MediumLack of __gap VariableAcknowledged

The report gives no description here.

MediumUsers Can Lose Funds in L1ERC20Bridge Implementation ContractAcknowledged

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 (20)

  • IContractDeployer.sol
  • AccountCodeStorage.sol
  • L2EthToken.sol
  • IKnownCodesStorage.sol
  • IImmutableSimulator.sol
  • bootloader.yul
  • L2StandardERC20.sol
  • NonceHolder.sol
  • L2ERC20Bridge.sol
  • IEthToken.sol
  • IL1Bridge.sol
  • IL2StandardToken.sol
  • INonceHolder.sol
  • MsgValueSimulator.sol
  • IL2Bridge.sol
  • L1ERC20Bridge.sol
  • KnownCodesStorage.sol
  • IAccountCodeStorage.sol
  • ContractDeployer.sol
  • ImmutableSimulator.sol

Part of ZKsync’s security record

ZKsync
Audits18 audits by 1 firmLast audit Feb 2025, by OpenZeppelin.
Critical findingsNo open critical findingsAcross the 18 reports, 2 critical findings were reported. Each is marked fixed by the firm that reported it.
Open ZKsync’s security record

Security firm

OpenZeppelin

67 projects reviewed · 184 reports · latest Aug 2026

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