SECURITY REPORT · EXTENSHI SCAN
Sidebery
Firefox extension·by mbnuqw
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
Sidebery's safety score vs every other extension we've scanned
Globally
80.63%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
70.63%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
4
median 38Lower is safer
Risky permissions
8
median 1Critical + high perms
Total permissions
22
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 4 distinct issues across 6 severities
4
distinct issues
detected
detected
Scanners reported 8 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical125%
High00%
Needs Review00%
Medium375%
Low00%
Info00%
Permissions requested
8 risky permissions of 22 total
1 critical permission require attention
This extension requests 22 permissions in total. 8 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
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
Control proxy settings(optional)
Can route your browser traffic through a proxy server
High
Observe web requests(optional)
Can monitor all network requests made by the browser
High
Block and modify web requests(optional)
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
Container tabs
Can manage Firefox container tabs and their identities
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 session data
Can query and restore recently closed tabs and windows
Medium
Custom menus
Can add custom items to the browser context menu
Medium
Override context menu
Can override the default context menu behavior
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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