SECURITY REPORT · EXTENSHI SCAN
WebDiff
Firefox extension·by popov654
32
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.
Likely abandonedsafety score reduced by 30 points
- No update in over 6 years
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
WebDiff's safety score vs every other extension we've scanned
Globally
7%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,636 extensions
In Web Development
3%of web development extensions carry more risk
Riskier ←→ Safer
Ranked against 15,276 web development extensions
Findings
147
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
1
median 2vs category median
Findings breakdown
Automated security signal · 147 distinct issues across 6 severities
147
distinct issues
detected
detected
Critical11%
High53%
Needs Review00%
Medium13693%
Low53%
Info00%
Permissions requested
1 risky permission of 1 total
1 critical permission require attention
This extension requests 1 permission in total. 1 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
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Scan performed by extenshi.io · Aug 25, 2026
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