SECURITY REPORT · EXTENSHI SCAN
MPV Opener for Firefox
Firefox extension·by Lu15-F3
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
MPV Opener for Firefox's safety score vs every other extension we've scanned
Globally
3%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
1%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
41
median 4Lower is safer
Critical findings
4
median 0Severity = Critical
Permissions
9
median 3Declared in manifest
Active users
1
median 6vs category median
Findings breakdown
Automated security signal · 41 distinct issues across 6 severities
41
distinct issues
detected
detected
Critical410%
High1127%
Needs Review00%
Medium1946%
Low717%
Info00%
Permissions requested
4 risky permissions of 9 total
2 critical permissions require attention
This extension requests 9 permissions in total. 4 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
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
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Custom menus
Can add custom items to the browser context menu
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Scan performed by extenshi.io · Aug 18, 2026
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