SECURITY REPORT · EXTENSHI SCAN
Buttercup
Edge extension·by MadDev Oy
66
/ 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
Buttercup's safety score vs every other extension we've scanned
Globally
5%of extensions carry more risk
Riskier ←→ Safer
Ranked against 421,529 extensions
In Productivity
12%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 8,225 productivity extensions
Findings
97
median 22Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
4
median 3Declared in manifest
Active users
605
median 96vs category median
Findings breakdown
Automated security signal · 97 distinct issues across 6 severities
97
distinct issues
detected
detected
Scanners reported 111 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical11%
High1718%
Needs Review00%
Medium6163%
Low1313%
Info55%
Permissions requested
1 risky permission of 4 total
1 high-risk permission require attention
This extension requests 4 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
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 · Oct 22, 2026
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