MetaMask security record
As of 30 Oct 2026, MetaMask has 8 audit reports by 2 security firms on Trustblock; the latest is by Cyfrin, dated 20 Apr 2026. Those reports list no open critical findings.
Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Trustblock does not review code.
Audits8
Newest first
| Audit | Security firm | Date | Scope | Critical findings | Report |
|---|---|---|---|---|---|
| MetaMask VedaAdapter Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| MetaMask Connect Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Delegation Framework - Total Balance Change | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Metamask Delegation Framework Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Metamask Delegation Framework Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Delegation Framework Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Delegation Framework Audit Report | Security firm: Cyfrin | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| MetaMask Delegation Framework | Security firm: Consensys | Date: | Scope: Repository at commit ec0c0d6 | No open critical findings | Open · diligence.security |
Findings32
Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 0 |
| High | 0 | 0 | 3 |
| Medium | 0 | 5 | 6 |
| Low | 2 | 4 | 12 |
Marked Informational or Gas by the firms. Not counted as findings.
InformationalDeployment script instructs using plaintext private key via CLI argumentMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Acknowledged
The report gives no description here.
Open the reportInformationalFirst transaction on SpecificActionERC20TransferBatchEnforcer does not support sending native valueDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Acknowledged
The report gives no description here.
Open the reportGasNativeTokenStreamingEnforcer and ERC20TokenStreamingEnforcer gas optimizationsDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Acknowledged
The report gives no description here.
Open the reportInformationalInsufficient delegate address validation in NativeTokenPaymentEnforcerDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Acknowledged
The report gives no description here.
Open the reportInformationalNotSelf() error declaration is unusedDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Acknowledged
The report gives no description here.
Open the reportGasWebAuthn::contains() optimizationDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Acknowledged
The report gives no description here.
Open the reportInformationalDeployment script uses hardcoded zero-address placeholders instead of environment variablesMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Fixed
The report gives no description here.
Open the reportGasEliminate single-use encodedTransfer_ local variableMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Fixed
The report gives no description here.
Open the reportGasUse calldata instead of memory for external function array parametersMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Fixed
The report gives no description here.
Open the reportInformationalDecompression Bomb due to lack of post decompression size checkMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportShow 10 more
InformationalMissing mode field validation in walletclient allows handler selection via untrusted inputMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportInformationalSession expiry not enforced on inbound message pathMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportInformationalIncorrect contract natspec for ERC1155TotalBalanceChangeEnforcerDelegation Framework - Total Balance Change · Cyfrin · 1 Sep 2025Fixed
The report gives no description here.
Open the reportInformationalInsufficient documentation of "TotalBalanceChangeEnforcer" can lead to incorrect use of enforcersDelegation Framework - Total Balance Change · Cyfrin · 1 Sep 2025Fixed
The report gives no description here.
Open the reportInformationalMisleading documentation in afterAllHook() natspecDelegation Framework - Total Balance Change · Cyfrin · 1 Sep 2025Fixed
The report gives no description here.
Open the reportInformationalDelegate controlled privilege escalation risk in LogicalOrWrapperEnforcerMetamask Delegation Framework Audit Report · Cyfrin · 7 May 2025Fixed
The report gives no description here.
Open the reportInformationalExecution mode restriction in LogicalOrWrapperEnforcer can be removedMetamask Delegation Framework Audit Report · Cyfrin · 7 May 2025Fixed
The report gives no description here.
Open the reportInformationalAmbiguous expiration timestamp validation in DelegationMetaSwapAdapterMetamask Delegation Framework Audit Report · Cyfrin · 1 May 2025Fixed
The report gives no description here.
Open the reportInformationalMissing zero address checks in DelegationMetaSwapAdapterMetamask Delegation Framework Audit Report · Cyfrin · 1 May 2025Fixed
The report gives no description here.
Open the reportGasERC20PeriodTransferEnforcer gas optimizationsDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Fixed
The report gives no description here.
Open the reportShow 3 more
GasUnnecessary execution mode support in DelegationMetaSwapAdapterDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Fixed
The report gives no description here.
Open the reportInformationalDelegationManager is incompatible with smart contract wallets with Approved hashesDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportInformationalMissing zero length check in AllowedMethodsEnforcer::getTermsInfo()Delegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
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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