SECURITY REPORT · EXTENSHI SCAN
Universal Browser Manager
Firefox extension·by Jan Zavřel
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
Universal Browser Manager's safety score vs every other extension we've scanned
Globally
74.62%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
64.62%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
25
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
10
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 25 distinct issues across 6 severities
25
distinct issues
detected
detected
Scanners reported 33 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High28%
Needs Review00%
Medium1144%
Low624%
Info624%
Permissions requested
2 risky permissions of 10 total
2 high-risk permissions require attention
This extension requests 10 permissions in total. 2 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
Access browsing history
Can read and modify your complete browsing history
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access session data
Can query and restore recently closed tabs and windows
Medium
Write to clipboard
Can place content onto your clipboard
Medium
Read clipboard
Can read text and data currently on your clipboard
Medium
Custom menus
Can add custom items to the browser context menu
Medium
Override context menu
Can override the default context menu behavior
Medium
Show notifications
Can display desktop notifications outside the browser
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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