SECURITY REPORT · EXTENSHI SCAN
JS Injector Code
Firefox extension·by ValKos
0
/ 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
JS Injector Code's safety score vs every other extension we've scanned
Globally
4%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
5%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
49
median 16Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
7
median 3Declared in manifest
Active users
0
median 14vs category median
Findings breakdown
Automated security signal · 49 distinct issues across 6 severities
49
distinct issues
detected
detected
Critical12%
High1224%
Needs Review00%
Medium3469%
Low24%
Info00%
Permissions requested
2 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
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
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
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Scan performed by extenshi.io · Aug 7, 2026
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