SECURITY REPORT · EXTENSHI SCAN
WebGrenade
Firefox extension·by macallan
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
WebGrenade's safety score vs every other extension we've scanned
Globally
54.77%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
44.77%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
37
median 38Lower is safer
Risky permissions
5
median 1Critical + high perms
Total permissions
12
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 37 distinct issues across 6 severities
37
distinct issues
detected
detected
Scanners reported 45 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical13%
High514%
Needs Review00%
Medium3081%
Low13%
Info00%
Permissions requested
5 risky permissions of 12 total
1 critical permission require attention
This extension requests 12 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Access browsing history
Can read and modify your complete browsing history
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Block requests with host access
Can block or redirect network requests and requires host permissions
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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