SECURITY REPORT · EXTENSHI SCAN
Codex Computer Use for Firefox
Firefox extension·by Dara A.
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
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
Codex Computer Use for Firefox's safety score vs every other extension we've scanned
Globally
1%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Tabs
0%of tabs extensions carry more risk
Riskier ←→ Safer
Ranked against 11,722 tabs extensions
Findings
243
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
22
median 3Declared in manifest
Active users
10
median 3vs category median
Findings breakdown
Automated security signal · 243 distinct issues across 6 severities
243
distinct issues
detected
detected
Scanners reported 276 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical21%
High219%
Needs Review00%
Medium13455%
Low6226%
Info2410%
Permissions requested
12 risky permissions of 22 total
2 critical permissions require attention
This extension requests 22 permissions in total. 12 of them grant broad capabilities that are worth a careful look.
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
High
Delete browsing data
Can remove browsing history, cookies, cache, and other browsing data
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Manage downloads
Can initiate downloads and access your download history
High
Access browsing history
Can read and modify your complete browsing history
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Access session data
Can query and restore recently closed tabs and windows
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Open downloaded files
Can open files that have been downloaded
Low
Schedule tasks
Can schedule periodic background tasks
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Scan performed by extenshi.io · Aug 1, 2026
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