SECURITY REPORT · EXTENSHI SCAN
Mailvelope
Firefox extension·by Mailvelope GmbH
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
Mailvelope's safety score vs every other extension we've scanned
Globally
44.31%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
34.31%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
327
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
7
median 4All declared perms
Critical findings
4
median 2Severity = Critical
Findings breakdown
Automated security signal · 327 distinct issues across 6 severities
327
distinct issues
detected
detected
Scanners reported 335 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical41%
High299%
Needs Review00%
Medium24876%
Low4614%
Info00%
Permissions requested
3 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps(optional)
Can exchange messages with applications installed on your computer
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
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Low
Schedule tasks
Can schedule periodic background tasks
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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