SECURITY REPORT · EXTENSHI SCAN
Native FLV Playback
Firefox extension·by Heporis
72
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
Native FLV Playback's safety score vs every other extension we've scanned
Globally
9%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,874 extensions
In Photos Music Videos
5%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 11,273 photos music videos extensions
Findings
74
median 7Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
107
median 6vs category median
Findings breakdown
Automated security signal · 74 distinct issues across 6 severities
74
distinct issues
detected
detected
Critical34%
High3142%
Needs Review00%
Medium3345%
Low79%
Info00%
Permissions requested
3 risky permissions of 5 total
3 high-risk permissions require attention
This extension requests 5 permissions in total. 3 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
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
Medium
Store local data
Can save data locally in the browser for persistence
Info
*://*/*.flv*
No additional information available.
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Scan performed by extenshi.io · Oct 22, 2026
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