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5Versions
0Code reviewed

Not reviewed

No code review on record

We have not reviewed this extension’s code, so we cannot vouch for it either way. Check the permissions below to decide whether it asks for more than it needs.

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What our analysis found

Custom Scrollbars, used by 16,233 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites. It comes from a trusted publisher and was last updated in January 2026.

Custom Scrollbars

Custom Scrollbars Firefox extension security report

ID: custom-scrollbars

Extension Info & Metadata

Status
Active
Version
4.5.1
Size
0.14 MB
Rating
4.5/5
Reviews
309
Users
16,233
Type
Extension
Updated
Jan 16, 2026
Category
N/A
Price
Free
Featured
Yes
Visibility
Listed
Mature
No
By Google
No
Trusted
No
Download CRX
Firefox Add-ons
Report Issue
This publisherTrack record
31extensions
2 no longer listed

Publisher Contextual Analysis

Trusted
Author
Wesley Branton
Privacy
Privacy Policy
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Website
Visit
Extensions
31
Active
17
Obsolete
2
Listed
31
Unlisted
0
Users
52,977

Screenshots & videos

Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4

Install growth

Item
Type
Severity
Description
<all_urls>
Host
Critical
Broad host access — the extension can read/modify content on every website.
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
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.
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

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About this extension

Give Firefox a personal touch with customized scrollbars!

User reviews

Extension files

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URLs
17

URLs

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No URLs found
No IP addresses found

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Version
Size
Verdict
Findings
Permhash
4.2.2
Latest
0.13 MBNot scanned—
be16c1c72e9bd79555e63211d4f274822032c85fbf0f6f6ca97fe7c5425999c4
4.3
0.14 MBNot scanned—
be16c1c72e9bd79555e63211d4f274822032c85fbf0f6f6ca97fe7c5425999c4
4.4
0.14 MBNot scanned—
be16c1c72e9bd79555e63211d4f274822032c85fbf0f6f6ca97fe7c5425999c4
4.5
0.14 MBNot scanned—
be16c1c72e9bd79555e63211d4f274822032c85fbf0f6f6ca97fe7c5425999c4
4.5.1
0.14 MBNot scanned—
be16c1c72e9bd79555e63211d4f274822032c85fbf0f6f6ca97fe7c5425999c4
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Code Diff

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0 changed files detected

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