SECURITY REPORT · EXTENSHI SCAN
Theme Customizer - for Firefox
Firefox extension·by HaSa-Tools
0
/ 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
Theme Customizer - for Firefox's safety score vs every other extension we've scanned
Globally
76%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Appearance
46%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 17,915 appearance extensions
Findings
3
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 2Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 3 distinct issues across 6 severities
3
distinct issues
detected
detected
Critical00%
High133%
Needs Review00%
Medium133%
Low133%
Info00%
Permissions requested
1 risky permission of 3 total
1 high-risk permission require attention
This extension requests 3 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Store local data
Can save data locally in the browser for persistence
Low
Customize theme
Can change the browser theme appearance
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Scan performed by extenshi.io · Aug 24, 2026
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