SECURITY REPORT · EXTENSHI SCAN
ePub Viewer
Edge extension·by Bermet
45
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
Likely abandonedsafety score reduced by 30 points
- No update in over 5 years
- Bundles libraries with known vulnerabilities and no fix in sight
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
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 Viewer's safety score vs every other extension we've scanned
Globally
24%of extensions carry more risk
Riskier ←→ Safer
Ranked against 401,999 extensions
In Entertainment
25%of entertainment extensions carry more risk
Riskier ←→ Safer
Ranked against 4,273 entertainment extensions
Findings
34
median 12Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
3
median 0Declared in manifest
Active users
1618
median 53vs category median
Findings breakdown
Automated security signal · 34 distinct issues across 6 severities
34
distinct issues
detected
detected
Scanners reported 35 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical26%
High00%
Needs Review00%
Medium2471%
Low618%
Info26%
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
Medium
Add context menu items
Can add custom items to the right-click context menu
Info
chrome://favicon/
No additional information available.
Are you the author of ePub Viewer?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show ePub Viewer's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 11, 2026
Browser extensions made transparent.