extenshi.io
SECURITY REPORT · EXTENSHI SCAN

MetaMask

Chrome extension·by metamask
20
/ 100 SAFETY SCORE
CRITICAL
Severe indicators. Treat as unsafe until the developer addresses these findings.

Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue

How it ranks

MetaMask's safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,748 extensions
In Productivity
1%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 7,638 productivity extensions
Findings
1316
median 18Lower is safer
Critical findings
5
median 0Severity = Critical
Permissions
13
median 3Declared in manifest
Active users
12000000
median 105vs category median

Findings breakdown

Automated security signal · 1,316 distinct issues across 6 severities
1,316
distinct issues
detected
1 square ≈ 3 issues
Scanners reported 1,416 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

3 risky permissions of 13 total
3 high-risk permissions require attention
This extension requests 13 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
Observe web requests

Can monitor all network requests made by the browser

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Write to clipboard

Can place content onto your clipboard

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

Medium
Read clipboard

Can read text and data currently on your clipboard

Low
Schedule tasks

Can schedule periodic background tasks

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Scan performed by extenshi.io · Jul 27, 2026
Browser extensions made transparent.