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1Versions
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Not reviewed

No code review on record

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4 indicators in this extension

4 indicators
0 versions analysed

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What our analysis found

YouTube Download, used by 5,116 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites, can observe network requests and allows unsafe code evaluation. It comes from a publisher with 2 extensions and was last updated in April 2026.

YouTube Download Firefox extension security report

ID: yt5s-youtube-download

Extension Info & Metadata

Status
Active
Version
0.8
Size
0.05 MB
Rating
4.3/5
Reviews
23
Users
5,116
Type
Extension
Updated
Apr 16, 2026
Category
N/A
Price
Free
Featured
No
Visibility
Listed
Mature
No
By Google
No
Trusted
No
Download CRX
Firefox Add-ons
Report Issue
This publisherTrack record
2extensions
All still listed

Publisher Contextual Analysis

Author
YouTube Download by YT5S
Extensions
2
Active
1
Obsolete
0
Listed
2
Unlisted
0
Users
10,232

Install growth

Item
Type
Severity
Description
webRequest
Permission
Critical
This permission enables the extension to monitor and analyze all web requests made by the browser. Rated Critical because it can observe all network traffic including sensitive data, track browsing behavior, and gather authentication tokens.
webRequestBlocking
Permission
Critical
This permission allows the extension to intercept, modify, or block any web request in real-time before it reaches its destination. Rated Critical because it can modify sensitive data (like passwords, credit cards) before encryption, redirect traffic to malicious sites, or block security updates.
<all_urls>
Host
Critical
Broad host access — the extension can read/modify content on every website.
Dangerous Permission Combination
Risk Factor
Critical
This extension can intercept, modify, and block web requests in real-time.
downloads
Permission
High
This permission controls file downloads and accesses download history. Rated High because it can download malicious files, access sensitive downloaded documents, and track user download patterns.
webNavigation
Permission
High
This permission enables monitoring of all browser navigation events and transitions. Rated High because it can track every page visit, navigation method, and browsing pattern, potentially exposing sensitive browsing behavior and user activities.
Contextual Risk Factors
Risk Factor
High
The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation• 15% increase: Older manifest version lacks modern security controls• 25% increase: Unsafe code evaluation capabilities increase attack surface
Broad Host Permissions
Risk Factor
High
This extension has broad host permissions allowing it to access many or all websites.
Broad Content Script Access
Risk Factor
High
This extension can inject scripts into any website.
Unsafe JavaScript Evaluation
Risk Factor
High
This extension's CSP allows "unsafe-eval".
tabs
Permission
Medium
This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
Early Content Script Execution
Risk Factor
Medium
This extension runs content scripts at document_start.
Older Manifest Version
Risk Factor
Medium
This extension uses Manifest Version 2

4 indicators in this extension

4 indicators
0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe

About this extension

Download YouTube video, fast and reliable. HD supported.

User reviews

Extension files

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URLs
4

URLs

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No URLs found
No IP addresses found

4 indicators in this extension

4 indicators
0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe
Version
Size
Verdict
Findings
Permhash
0.8
Latest
0.05 MBNot scanned—
6239456a688fe7db93185507fa9dd78465d133775d372072bbb384947822c11e
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