SECURITY REPORT · EXTENSHI SCAN
Tab Groups Sync
Firefox extension·by Eger37
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
Tab Groups Sync's safety score vs every other extension we've scanned
Globally
13%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Tabs
4%of tabs extensions carry more risk
Riskier ←→ Safer
Ranked against 11,722 tabs extensions
Findings
31
median 4Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
18
median 3Declared in manifest
Active users
3
median 3vs category median
Findings breakdown
Automated security signal · 31 distinct issues across 6 severities
31
distinct issues
detected
detected
Critical310%
High723%
Needs Review00%
Medium1548%
Low26%
Info413%
Permissions requested
8 risky permissions of 18 total
3 critical permissions require attention
This extension requests 18 permissions in total. 8 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions
Can enable, disable, or uninstall other browser extensions
Critical
Access to all websites
Can read and modify content on every website you visit
Critical
Communicate with desktop apps(optional)
Can exchange messages with applications installed on your computer
High
View open tabs
Can see URLs and titles of all open tabs
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Manage downloads
Can initiate downloads and access your download history
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Custom menus
Can add custom items to the browser context menu
Medium
Container tabs
Can manage Firefox container tabs and their identities
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
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Browser settings
Can read and modify browser-wide settings
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Scan performed by extenshi.io · Aug 24, 2026
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