SECURITY REPORT · EXTENSHI SCAN
Universal Custom Player
Firefox extension·by Владимир
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
Likely abandonedsafety score reduced by 30 points
- No update in over 6 years
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
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
Universal Custom Player's safety score vs every other extension we've scanned
Globally
18%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
7%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
73
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
7
median 3Declared in manifest
Active users
8
median 6vs category median
Findings breakdown
Automated security signal · 73 distinct issues across 6 severities
73
distinct issues
detected
detected
Scanners reported 75 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical11%
High811%
Needs Review00%
Medium6285%
Low23%
Info00%
Permissions requested
3 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 3 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
Observe web requests
Can monitor all network requests made by the browser
High
Manage downloads
Can initiate downloads and access your download history
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Store local data
Can save data locally in the browser for persistence
Info
*://*/*
No additional information available.
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Scan performed by extenshi.io · Aug 24, 2026
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