SECURITY REPORT · EXTENSHI SCAN
Customaise: AI Userscript & Agentscript Manager. Powered by MCP & WebMCP
Chrome extension·by Damian Szubertowicz
0
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.
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
Customaise: AI Userscript & Agentscript Manager. Powered by MCP & WebMCP's safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
0%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
496
median 16Lower is safer
Critical findings
4
median 0Severity = Critical
Permissions
16
median 3Declared in manifest
Active users
58
median 14vs category median
Findings breakdown
Automated security signal · 496 distinct issues across 6 severities
496
distinct issues
detected
detected
Scanners reported 786 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical41%
High398%
Needs Review00%
Medium33668%
Low10421%
Info133%
Permissions requested
6 risky permissions of 16 total
1 critical permission require attention
This extension requests 16 permissions in total. 6 of them grant broad capabilities that are worth a careful look.
Critical
Browser debugger access
Can attach to tabs and inspect/modify all page data using Chrome DevTools protocol
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
Manage downloads
Can initiate downloads and access your download history
High
View open tabs
Can see URLs and titles of all open tabs
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
User scripts
Can register and execute user scripts in web pages
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Write to clipboard
Can place content onto your clipboard
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
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Scan performed by extenshi.io · Aug 26, 2026
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