SECURITY REPORT · EXTENSHI SCAN
Real-Time STREAM Upscaler 4K
Firefox extension·by bjornfree
0
/ 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
Real-Time STREAM Upscaler 4K's safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Games Entertainment
0%of games entertainment extensions carry more risk
Riskier ←→ Safer
Ranked against 8,778 games entertainment extensions
Findings
19
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
3
median 4vs category median
Findings breakdown
Automated security signal · 19 distinct issues across 6 severities
19
distinct issues
detected
detected
Critical211%
High15%
Needs Review00%
Medium1579%
Low15%
Info00%
Permissions requested
2 risky permissions of 5 total
1 critical permission require attention
This extension requests 5 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
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
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Scan performed by extenshi.io · Aug 24, 2026
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