SECURITY REPORT · EXTENSHI SCAN
Free Subscription Tracker | Substash
Firefox extension·by chrisl.im
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
Free Subscription Tracker | Substash's safety score vs every other extension we've scanned
Globally
84.42%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
74.42%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
14
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
3
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 14 findings across 5 severities
14
findings
detected
detected
Critical00%
High00%
Medium643%
Low750%
Info17%
Permissions requested
3 permissions declared
No risky permissions
3 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://api.frankfurter.app/*
No additional information available.
Info
https://*.supabase.co/*
No additional information available.
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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