SECURITY REPORT · EXTENSHI SCAN
ePub Reader: Read ePub Files
Firefox extension·by NovaLab
75
/ 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
ePub Reader: Read ePub Files's safety score vs every other extension we've scanned
Globally
26%of extensions carry more risk
Riskier ←→ Safer
Ranked against 397,149 extensions
In Photos Music Videos
12%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 11,069 photos music videos extensions
Findings
18
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
2
median 6vs category median
Findings breakdown
Automated security signal · 18 distinct issues across 6 severities
18
distinct issues
detected
detected
Scanners reported 19 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High317%
Needs Review00%
Medium1478%
Low16%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Sep 27, 2026
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