SECURITY REPORT · EXTENSHI SCAN
Buttercup
Firefox extension·by MadDev
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
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
Buttercup's safety score vs every other extension we've scanned
Globally
62.8%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
52.8%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
55
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
6
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 55 findings across 5 severities
55
findings
detected
detected
Critical00%
High35%
Medium4073%
Low815%
Info47%
Permissions requested
3 risky permissions of 6 total
3 high-risk permissions require attention
This extension requests 6 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
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
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Write to clipboard
Can place content onto your clipboard
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
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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