extenshi.io
SECURITY REPORT · EXTENSHI SCAN

YouTube Video Downloader

Firefox extension·by Free Browser Addons
42
/ 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
  • 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

YouTube Video Downloader's safety score vs every other extension we've scanned
Globally
17%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,594 extensions
In Social & Communication
8%of social & communication extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 13,641 social & communication extensions
Findings
22
median 5Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
1532
median 3vs category median

Findings breakdown

Automated security signal · 22 distinct issues across 6 severities
22
distinct issues
detected
Scanners reported 31 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

4 risky permissions of 6 total
4 high-risk permissions require attention
This extension requests 6 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
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
Control proxy settings

Can route your browser traffic through a proxy server

High
View open tabs

Can see URLs and titles of all open tabs

Medium
Store local data

Can save data locally in the browser for persistence

Info
*://*/*

No additional information available.

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Scan performed by extenshi.io · Aug 25, 2026
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