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 |
HighNonce tracking lacks integrity protections as spoofed clientId enables persistent message suppressionMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportHighTotalBalanceEnforcer validation bypass when mixed with state modifying enforcersDelegation Framework - Total Balance Change · Cyfrin · 1 Sep 2025Fixed
The report gives no description here.
Open the reportHighEntryPoint not included in user operation hash creates the possibility of Replay AttacksDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportMediumeciesjs major version mismatch between dApp SDK and mobile wallet creates untested cryptographic interoperability riskMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportMediumNo public key validation at handshake and session resumption boundariesMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportMediumRace conditions in sessionstore master list operationsMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportMediumSession object with private key, decrypted payloads logged in debug mode and deeplink url being logged unconditionally on error pathMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportMediumStreaming enforcers increase token spending even without actual token transferDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Fixed
The report gives no description here.
Open the reportMediumTransfer Amount enforcer for ERC20 and Native transfers increase spend limit without checking actual transfersDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportLowInternal origin allowlist bypass via unnormalized URL matching in ConnectionRegistryMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportShow 10 more
LowOTP generated using math.random is not cryptographically secure way to generate verification codeMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportLowTransport-Layer Nonce Poisoning Causes Permanent Session Denial of ServiceMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportLowWeak structural validation of connectionRequest from deeplinkMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Fixed
The report gives no description here.
Open the reportLowOverly restrictive balance consistency check in TotalBalanceChange class of enforcers can cause potential DoSDelegation Framework - Total Balance Change · Cyfrin · 1 Sep 2025Fixed
The report gives no description here.
Open the reportLowBugged erc7579-implementation commit importedDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Fixed
The report gives no description here.
Open the reportLowWrong event data field in ERC20PeriodTransferEnforcerDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Fixed
The report gives no description here.
Open the reportLowAllowedCalldataEnforcer cannot authenticate empty calldata preventing receive() function callsDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportLowEIP7702StatelessDeleGator violates EIP4337 signature validation standardsDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportLowNFT safe transfers will revert using ERC721TransferEnforcerDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportLowParameter mismatch in IdEnforcer::beforeHook() event emissionDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Fixed
The report gives no description here.
Open the reportShow 1 more
LowImproper Calldata Length Check in ERC721TransferEnforcer and OwnershipTransferEnforcer ContractsMetaMask Delegation Framework · Consensys · 1 Oct 2024Fixed
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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