SECURITY REPORT · EXTENSHI SCAN

CyberFox

Firefox extension·by SirSAC
36
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

Likely abandonedsafety score reduced by 30 points

  • No update in over 7 years
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

CyberFox's safety score vs every other extension we've scanned
Globally
10%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Other
3%of other extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 28,735 other extensions
Findings
17
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
74
median 3Declared in manifest
Active users
4
median 2vs category median

Findings breakdown

Automated security signal · 17 distinct issues across 6 severities
17
distinct issues
detected

Permissions requested

20 risky permissions of 74 total
5 critical permissions require attention
This extension requests 74 permissions in total. 20 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions

Can enable, disable, or uninstall other browser extensions

Critical
Communicate with desktop apps

Can exchange messages with applications installed on your computer

Critical
Access to all websites

Can read and modify content on every website you visit

Critical
Browser debugger access

Can attach to tabs and inspect/modify all page data using Chrome DevTools protocol

Critical
Capture screen content

Can capture screenshots or video of your screen, windows, or tabs

High
Delete browsing data

Can remove browsing history, cookies, cache, and other browsing data

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Access bookmarks

Can read and modify your saved bookmarks

Medium
Browser settings

Can read and modify browser-wide settings

Medium
Read clipboard

Can read text and data currently on your clipboard

Medium
Write to clipboard

Can place content onto your clipboard

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Container tabs

Can manage Firefox container tabs and their identities

Medium
DNS resolution

Can perform DNS lookups

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Scan performed by extenshi.io · Aug 3, 2026
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