Firefox Add-ons

9Versions

0Code reviewed

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66 indicators in this extension

66 indicators

0 versions analysed

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What our analysis found

Vimium, used by 41,374 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites and can inject scripts into pages. It comes from a publisher with 12 extensions and was last updated in March 2026.

Vimium Firefox extension security report

ID: vimium-ff

Extension Info & Metadata

Status

Active

Version

2.4.2

Size

0.19 MB

Rating

4.8/5

Reviews

591

Users

41,374

Type

Extension

Updated

Mar 25, 2026

Publisher Contextual Analysis

Author: Phil Crosby
Privacy: Privacy Policy
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

103,489

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Screenshots & videos

Install growth

User Growth

No data available

No user growth data available for this extension

Rating Count

No data available

No rating count data available for this extension

Average Rating

No data available

No rating data available for this extension

See plans

React Flow

Internal permhash`e1c4a8fbee…`
No malicious matches

1 other extension carries this fingerprint, none of them known malicious.

Withheldnot flagged

Permhash (Mandiant)`ff7774a319…`
No malicious matches

1 other extension carries this fingerprint, none of them known malicious.

Withheldnot flagged

Network indicators

66 URLs and 0 IP literals were extracted from this version.

Item	Type	Severity	Description
scripting	Permission	Critical	This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
<all_urls>	Host	Critical	Broad host access — the extension can read/modify content on every website.
history	Permission	High	This permission grants access to your complete browsing history. Rated High because it can track all visited websites, reveal sensitive browsing patterns, and expose private information.
sessions	Permission	High	This permission accesses recently closed tabs and windows. Rated High because it can monitor user activity, recover closed sensitive pages, and track browsing 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.
clipboardRead	Permission	High	This permission allows reading clipboard content. Rated High because it can steal copied passwords, sensitive data, and monitor all content copied to clipboard.
clipboardWrite	Permission	High	This permission allows modification of clipboard content. Rated High because it can inject malicious content into the clipboard, modify copied passwords, and manipulate copied data.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation• 10% increase: About:blank access enables potential sandbox escape vectors
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.
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.
About:blank Access	Risk Factor	Medium	This extension can run content scripts in about:blank pages.
bookmarks	Permission	Low	This permission manages browser bookmarks and folders. Rated Low because it can only modify bookmark data, which is not sensitive and changes are visible to users.
notifications	Permission	Low	This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.
search	Permission	Low	This permission accesses search functionality. Rated Low because it only interacts with the browser's search feature without accessing search history.

66 indicators in this extension

66 indicators

0 versions analysed

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

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About this extension

The Hacker's Browser. Vimium provides keyboard shortcuts for navigation and control in the spirit of Vim.

User reviews

4.1 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

It's the best add-on ever like it just works, flawlessly!

August·13 Sept 2026

Vimium is a really convenient extension for those who prefer browsing the web using the keyboard without having to use a computer mouse. Thank you, developers, for creating such a great extension!

Firefox user 19829301·8 Sept 2026

This plugin conflicts with Global Speed when I use it. Even after I modified the plugin's shortcut keys, this issue still occurs, making Global Speed completely unusable. So I had no other choice but to uninstall Vimium.

Extension files

Browse and explore files within this extension package

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URLs

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No URLs found

No IP addresses found

66 indicators in this extension

66 indicators

0 versions analysed

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

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
1.67.7 Latest	0.28 MB	Not scanned	—	ca38de76cea55ab65d237dcc1d04e9229787098c4e2947a025dbcb3967dd19b3
2.0.4	0.26 MB	Not scanned	—	bf0cacd309e09a330e6a0451f1d6c8ac9d2a6f692ec6e074eef61c932ed82440
2.0.6	0.26 MB	Not scanned	—	bf0cacd309e09a330e6a0451f1d6c8ac9d2a6f692ec6e074eef61c932ed82440
2.1.2	0.27 MB	Not scanned	—	bf0cacd309e09a330e6a0451f1d6c8ac9d2a6f692ec6e074eef61c932ed82440
2.2.1	0.18 MB	Not scanned	—	ff7774a319b3766e9402ad6e51d2fb7cd9bce6155f779e7826a12b9b3212d638
2.3	0.19 MB	Not scanned	—	ff7774a319b3766e9402ad6e51d2fb7cd9bce6155f779e7826a12b9b3212d638
2.3.1	0.22 MB	Not scanned	—	ff7774a319b3766e9402ad6e51d2fb7cd9bce6155f779e7826a12b9b3212d638
2.4.0	0.22 MB	Not scanned	—	ff7774a319b3766e9402ad6e51d2fb7cd9bce6155f779e7826a12b9b3212d638
2.4.2	0.19 MB	Not scanned	—	ff7774a319b3766e9402ad6e51d2fb7cd9bce6155f779e7826a12b9b3212d638

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Code Diff

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Not reviewed

66 indicators in this extension

What our analysis found