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SECURITY REPORT · EXTENSHI SCAN

Tree Style Tab

Firefox extension·by Piro (piro_or)
93
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.

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

Tree Style Tab's safety score vs every other extension we've scanned
Globally
92.68%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked across every extension we scan
In its category
82.68%of its category extensions carry more risk
This extension
Riskier ←→ Safer
Ranked within its category
Findings
7
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
17
median 4All declared perms
Critical findings
0
median 2Severity = Critical

Findings breakdown

Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected

Permissions requested

3 risky permissions of 17 total
1 critical permission require attention
This extension requests 17 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites(optional)

Can read and modify content on every website you visit

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

High
View open tabs

Can see URLs and titles of all open tabs

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Container tabs

Can manage Firefox container tabs and their identities

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

Medium
Access session data

Can query and restore recently closed tabs and windows

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Access bookmarks

Can read and modify your saved bookmarks

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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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