SECURITY REPORT · EXTENSHI SCAN
HeaderFlex
Chrome extension·by knothhe
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
HeaderFlex'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 Productivity
2%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
155
median 16Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
11
median 3Declared in manifest
Active users
28
median 14vs category median
Findings breakdown
Automated security signal · 155 distinct issues across 6 severities
155
distinct issues
detected
detected
Scanners reported 192 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical21%
High2617%
Needs Review00%
Medium11272%
Low117%
Info43%
Permissions requested
5 risky permissions of 11 total
2 critical permissions require attention
This extension requests 11 permissions in total. 5 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
Critical
Capture screen content
Can capture screenshots or video of your screen, windows, or tabs
High
Manage downloads
Can initiate downloads and access your download history
High
Capture tab content
Can capture audio and video streams from browser tabs
High
Access browser cookies(optional)
Can read and modify cookies, potentially accessing login sessions
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Block requests with host access
Can block or redirect network requests and requires host permissions
Medium
Read clipboard
Can read text and data currently on your clipboard
Low
Use side panel
Can display content in the browser side panel
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
Low
Create offscreen documents
Can create hidden documents for background processing tasks
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Scan performed by extenshi.io · Aug 19, 2026
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