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SECURITY REPORT · EXTENSHI SCAN

Jan Browser MCP

Chrome extension·by Jan AI
62
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

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

Jan Browser MCP's safety score vs every other extension we've scanned
Globally
8%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,874 extensions
In Productivity
10%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 202,458 productivity extensions
Findings
44
median 17Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
7
median 3Declared in manifest
Active users
10000
median 14vs category median

Findings breakdown

Automated security signal · 44 distinct issues across 6 severities
44
distinct issues
detected
Scanners reported 45 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 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Browser debugger access

Can attach to tabs and inspect/modify all page data using Chrome DevTools protocol

High
View open tabs

Can see URLs and titles of all open tabs

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Access current tab

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

Low
Manage tab groups

Can create and manage tab groups

Info
windows

No additional information available.

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Scan performed by extenshi.io · Aug 18, 2026
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