SECURITY REPORT · EXTENSHI SCAN
Canvascope-extension
Firefox extension·by Noel Sason
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
Canvascope-extension's safety score vs every other extension we've scanned
Globally
2%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Alerts & Updates
1%of alerts & updates extensions carry more risk
Riskier ←→ Safer
Ranked against 6,603 alerts & updates extensions
Findings
395
median 4Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
24
median 3Declared in manifest
Active users
0
median 2vs category median
Findings breakdown
Automated security signal · 395 distinct issues across 6 severities
395
distinct issues
detected
detected
Scanners reported 402 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical31%
High164%
Needs Review00%
Medium33785%
Low369%
Info31%
Permissions requested
4 risky permissions of 24 total
4 high-risk permissions require attention
This extension requests 24 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
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
High
Manage downloads
Can initiate downloads and access your download history
High
Access browsing history
Can read and modify your complete browsing history
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 current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
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 31, 2026
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