extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Show Close Tab Button

Firefox extension·by zhihaushiu
82
/ 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

Show Close Tab Button's safety score vs every other extension we've scanned
Globally
34%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,885 extensions
In Appearance
16%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 19,044 appearance extensions
Findings
16
median 6Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
7
median 2Declared in manifest
Active users
46
median 3vs category median

Findings breakdown

Automated security signal · 16 distinct issues across 6 severities
16
distinct issues
detected

Permissions requested

5 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 5 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
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
View open tabs

Can see URLs and titles of all open tabs

High
Access all HTTP sites

Can read and modify content on all non-encrypted websites

High
Access all HTTPS sites

Can read and modify content on all encrypted websites

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Access current tab

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

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Scan performed by extenshi.io · Oct 22, 2026
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