SECURITY REPORT · EXTENSHI SCAN
CyberFox
Firefox extension·by SirSAC
0
/ 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
Riskier ←→ Safer
Ranked against 368,615 extensions
In Other
3%of other extensions carry more risk
Riskier ←→ Safer
Ranked against 26,652 other extensions
Findings
17
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
74
median 3Declared in manifest
Active users
2
median 2vs category median
Findings breakdown
Automated security signal · 17 distinct issues across 6 severities
17
distinct issues
detected
detected
Critical16%
High424%
Needs Review00%
Medium1271%
Low00%
Info00%
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
Are you the author of CyberFox?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show CyberFox's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 3, 2026
Browser extensions made transparent.