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SECURITY REPORT · EXTENSHI SCAN

YouTube Downloader for 4K, MP3 & Shorts - Tubly

Firefox extension·by Tubly
52
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

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 Downloader for 4K, MP3 & Shorts - Tubly's safety score vs every other extension we've scanned
Globally
2%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,596 extensions
In Photos Music Videos
1%of photos music videos extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 11,192 photos music videos extensions
Findings
91
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
9364
median 6vs category median

Findings breakdown

Automated security signal · 91 distinct issues across 6 severities
91
distinct issues
detected
Scanners reported 94 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

3 risky permissions of 10 total
3 high-risk permissions require attention
This extension requests 10 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

High
Manage downloads

Can initiate downloads and access your download history

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

Medium
Open downloaded files

Can open files that have been downloaded

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Block requests with host access

Can block or redirect network requests and requires host permissions

Low
Schedule tasks

Can schedule periodic background tasks

Info
https://*.youtube.com/*

No additional information available.

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Scan performed by extenshi.io · Sep 27, 2026
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