zkSync Bootloader Audit Report

OpenZeppelinFiles named in the report

Audit · firm’s term: audit

OpenZeppelin reviewed ZKsync (zkSync Bootloader Audit Report) on 27 Jan 2023: 17 findings, 1 critical; 16 marked fixed, 1 acknowledged.

1 critical finding, fixed
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Report hosted on blog.openzeppelin.com.

Trustblock does not review code.

Findings17

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

SeverityOpenAcknowledgedFixed
Critical001
High002
Medium012
Low0011
CriticalUseless Assertion CheckFixed

The report gives no description here.

HighNon-Standard Transaction HashFixed

The report gives no description here.

HighUnbound RLP Length EncodingFixed

The report gives no description here.

MediumOvershadowing and Uncaptured ReturnsFixed

The report gives no description here.

MediumString Literal Exceeds 32 Bytes LimitFixed

The report gives no description here.

LowDocumentation and Code MismatchFixed

The report gives no description here.

LowImprecise Naming of Transaction Struct ElementsFixed

The report gives no description here.

LowIncompatible Function SyntaxFixed

The report gives no description here.

LowInexplicit Fail in Bridge BurnFixed

The report gives no description here.

LowInexplicit ImportsFixed

The report gives no description here.

Show 6 more
LowLack of Revert MessagesFixed

The report gives no description here.

LowMismatch Between Interface and ImplementationFixed

The report gives no description here.

LowMissing Interface for L2EthTokenFixed

The report gives no description here.

LowTypeScript Constant Names Are InconsistentFixed

The report gives no description here.

LowUnused FunctionsFixed

The report gives no description here.

LowWrong EIP-712 Transaction Type CheckFixed

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 (8)

  • BootloaderUtilities.sol
  • L2EthToken.sol
  • IBootloaderUtilities.sol
  • bootloader.yul
  • RLPEncoder.sol
  • IEthToken.sol
  • IL2StandardToken.sol
  • MsgValueSimulator.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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