SECURITY REPORT · EXTENSHI SCAN
UniversalVideoDownloader
Firefox extension·by John
0
/ 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
UniversalVideoDownloader's safety score vs every other extension we've scanned
Globally
22%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
9%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
10
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
4
median 3Declared in manifest
Active users
1
median 6vs category median
Findings breakdown
Automated security signal · 10 distinct issues across 6 severities
10
distinct issues
detected
detected
Critical220%
High110%
Needs Review00%
Medium660%
Low110%
Info00%
Permissions requested
2 risky permissions of 4 total
2 critical permissions require attention
This extension requests 4 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps
Can exchange messages with applications installed on your computer
Critical
Access to all websites
Can read and modify content on every website you visit
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Show notifications
Can display desktop notifications outside the browser
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Scan performed by extenshi.io · Aug 24, 2026
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