ZKsync security record
As of 14 Oct 2026, ZKsync has 18 audit reports by 1 security firm on Trustblock; the latest is by OpenZeppelin, dated 5 Feb 2025. Those reports list no open critical findings.
Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Statuses are the security firms’ own. Trustblock does not review code.
Audits18
Newest first
| Audit | Security firm | Date | Scope | Critical findings | Report |
|---|---|---|---|---|---|
| ZKsync Paymaster Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| ZK Token, Capped Minter, and Merkle Distributor Au | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| ZKsync L1 Governance Diff Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| ZKsync L2 Governance Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| ZKsync State Transition Diff Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Matterlabs EIP-4844 Support Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync Keccak256 Upgrade Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync L1Messenger Upgrade Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync L2 Block Refactor Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync Upgrade System Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync GnosisSafeZk Assessment | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync Bridge and .transfer & .send Diff Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync WETH Bridge Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync Fee Model and Token Bridge Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| zkSync Bootloader Audit Report | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | 1 critical finding, fixed | Open · blog.openzeppelin.com |
| zkSync Layer 1 Diff Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | 1 critical finding, fixed | Open · blog.openzeppelin.com |
| zkSync Layer 1 Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
Findings128
Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 2 |
| High | 0 | 1 | 6 |
| Medium | 4 | 7 | 19 |
| Low | 6 | 9 | 74 |
HighDeposit cap not updated on withdrawalszkSync · OpenZeppelin · 8 Mar 2023Acknowledged
The report gives no description here.
Open the reportMediumConstant Block Difficulty Breaks EVM EquivalencezkSync L2 Block Refactor Audit · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportMediumUnexpected Refund RecipientzkSync GnosisSafeZk Assessment · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportMediumFragile Deposit LimitzkSync Bridge and .transfer & .send Diff Audit · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportMediumETH Can Be Locked Through Address AliasingzkSync WETH Bridge Audit · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportMediumLack of __gap VariablezkSync Fee Model and Token Bridge Audit · OpenZeppelin · 9 Mar 2023Acknowledged
The report gives no description here.
Open the reportMediumUsers Can Lose Funds in L1ERC20Bridge Implementation ContractzkSync Fee Model and Token Bridge Audit · OpenZeppelin · 9 Mar 2023Acknowledged
The report gives no description here.
Open the reportMediumUnprotected Initialization FunctionzkSync Bootloader Audit Report · OpenZeppelin · 27 Jan 2023Acknowledged
The report gives no description here.
Open the reportLowcastVoteWithReasonAndParamsBySig Is Incompatible With ERC-4337ZKsync L2 Governance Audit · OpenZeppelin · 23 Oct 2024Acknowledged
The report gives no description here.
Open the reportLowPossible Duplicate Event EmissionZKsync L2 Governance Audit · OpenZeppelin · 23 Oct 2024Acknowledged
The report gives no description here.
Open the reportShow 7 more
LowDiscouraged Solidity VersionzkSync GnosisSafeZk Assessment · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportLowUnreplenishable Deposit LimitzkSync Bridge and .transfer & .send Diff Audit · OpenZeppelin · 29 Jan 2024Acknowledged
The report gives no description here.
Open the reportLowCross-chain system contract invocation is allowed and undocumentedzkSync · OpenZeppelin · 8 Mar 2023Acknowledged
The report gives no description here.
Open the reportLowDiamond proxy holding large bridged ETH balancezkSync · OpenZeppelin · 8 Mar 2023Acknowledged
The report gives no description here.
Open the reportLowRevert messages are not informativezkSync · OpenZeppelin · 8 Mar 2023Acknowledged
The report gives no description here.
Open the reportLowFreezability differences between logical componentszkSync Layer 1 Audit · OpenZeppelin · 23 Nov 2022Acknowledged
The report gives no description here.
Open the reportLowlastDiamondFreezeTimestamp is unusedzkSync Layer 1 Audit · OpenZeppelin · 23 Nov 2022Acknowledged
The report gives no description here.
Open the reportContracts
No deployed address is recorded for these audits.
The reports name a repository or files. Open a report to see its scope.
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