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 |
MediumTrusted handshake mode vulnerable to man-in-the-middle via handshake channel interceptionMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Acknowledged
The report gives no description here.
Open the reportMediumDelegationMetaSwapAdapter is not compatible with fee on transfer tokensDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Acknowledged
The report gives no description here.
Open the reportMediumInconsistency in API and swap payloads in DelegationMetaSwapAdapter can potentially lead to unauthorized transfersDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Acknowledged
The report gives no description here.
Open the reportMediumMalicious user can create delegations that will spend unlimited amount of gas with SpecificActionERC20TransferBatchEnforcer caveatDelegation Framework Audit Report · Cyfrin · 1 Apr 2025Acknowledged
The report gives no description here.
Open the reportMediumGas griefing via duplicate entries in Allowed class of enforcersDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Acknowledged
The report gives no description here.
Open the reportLowPublic batch execution is economically griefable because a single pre-consumed delegation reverts the entire batchMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Acknowledged
The report gives no description here.
Open the reportLowVedaAdapter acts as a shared msg.sender for all Teller withdrawals, allowing any entity authorized for the TellerWithMultiAssetSupport::deposit to lock the adapter and block all user withdrawalsMetaMask VedaAdapter Audit Report · Cyfrin · 20 Apr 2026Acknowledged
The report gives no description here.
Open the reportLowUnvalidated initialMessage enables cross-dApp approval griefingMetaMask Connect Audit Report · Cyfrin · 5 Mar 2026Acknowledged
The report gives no description here.
Open the reportLowInconsistent timestamp range validation in TimestampEnforcerDelegation Framework Audit Report · Cyfrin · 18 Mar 2025Acknowledged
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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