SECURITY REPORT · EXTENSHI SCAN
Custom Session Layouts
Firefox extension·by Mejia
How it ranks
Custom Session Layouts's safety score vs every other extension we've scanned
Globally
99%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
90%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
0
median 38Lower is safer
Risky permissions
5
median 1Critical + high perms
Total permissions
9
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 0 distinct issues across 6 severities
0
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium00%
Low00%
Info00%
Permissions requested
5 risky permissions of 9 total
5 high-risk permissions require attention
This extension requests 9 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
High
View open tabs
Can see URLs and titles of all open tabs
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Access session data
Can query and restore recently closed tabs and windows
Are you the author of Custom Session Layouts?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Custom Session Layouts's live security score on GitHub or in your docs
Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.