SECURITY REPORT · EXTENSHI SCAN
Download Manager (S3)
Firefox extension·by Oleksandr
0
/ 100 SAFETY SCORE
CRITICAL
Severe indicators. Treat as unsafe until the developer addresses these findings.
Likely abandonedsafety score reduced by 30 points
- No update in over 7 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
Download Manager (S3)'s safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
Riskier ←→ Safer
Ranked against 368,615 extensions
In Download Management
0%of download management extensions carry more risk
Riskier ←→ Safer
Ranked against 4,225 download management extensions
Findings
38
median 4Lower is safer
Critical findings
4
median 0Severity = Critical
Permissions
12
median 4Declared in manifest
Active users
50570
median 9vs category median
Findings breakdown
Automated security signal · 38 distinct issues across 6 severities
38
distinct issues
detected
detected
Critical411%
High616%
Needs Review00%
Medium2463%
Low411%
Info00%
Permissions requested
6 risky permissions of 12 total
1 critical permission require attention
This extension requests 12 permissions in total. 6 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
High
Manage downloads
Can initiate downloads and access your download history
High
Access browsing history
Can read and modify your complete browsing history
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Open downloaded files
Can open files that have been downloaded
Medium
Add context menu items
Can add custom items to the right-click context menu
Info
downloads.shelf
No additional information available.
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Scan performed by extenshi.io · Aug 24, 2026
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