SECURITY REPORT · EXTENSHI SCAN
Certificate Pinner
Firefox extension·by Heurekus
0
/ 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 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
Certificate Pinner's safety score vs every other extension we've scanned
Globally
16%of extensions carry more risk
Riskier ←→ Safer
Ranked against 144,092 extensions
In Privacy & Security
12%of privacy & security extensions carry more risk
Riskier ←→ Safer
Ranked against 8,021 privacy & security extensions
Findings
24
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
7
median 4Declared in manifest
Active users
58
median 4vs category median
Findings breakdown
Automated security signal · 24 distinct issues across 6 severities
24
distinct issues
detected
detected
Critical14%
High313%
Needs Review00%
Medium1979%
Low14%
Info00%
Permissions requested
4 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 permissions in total. 4 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
High
View open tabs
Can see URLs and titles of all open tabs
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Jul 31, 2026
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