MetaMask Connect Audit Report
Audit · firm’s term: audit report
Cyfrin reviewed MetaMask (MetaMask Connect Audit Report) on 5 Mar 2026: 11 findings, 0 critical; 9 marked fixed, 2 acknowledged.
No open critical findings
Open the reportOpen MetaMask’s security record
Report hosted on GitHub.
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Findings11
Statuses are the security firm’s own, from its report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 0 |
| High | 0 | 0 | 1 |
| Medium | 0 | 1 | 4 |
| Low | 0 | 1 | 4 |
Marked Informational by the firm. Not counted as findings.
InformationalDecompression Bomb due to lack of post decompression size checkFixed
The report gives no description here.
InformationalMissing mode field validation in walletclient allows handler selection via untrusted inputFixed
The report gives no description here.
InformationalSession expiry not enforced on inbound message pathFixed
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.
Part of MetaMask’s security record
MetaMaskAudits8 audits by 2 firmsLast audit Apr 2026, by Cyfrin.
Critical findingsNo open critical findingsAcross 8 reports.
Open MetaMask’s security recordSecurity firm
Cyfrin28 projects reviewed · 79 reports · latest Sep 2026
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