extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Userback

Firefox extension·by Userback
63
/ 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

Userback's safety score vs every other extension we've scanned
Globally
3%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,885 extensions
In Appearance
1%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 19,044 appearance extensions
Findings
129
median 6Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
11
median 2Declared in manifest
Active users
79
median 3vs category median

Findings breakdown

Automated security signal · 129 distinct issues across 6 severities
129
distinct issues
detected

Permissions requested

2 risky permissions of 11 total
1 critical permission require attention
This extension requests 11 permissions in total. 2 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
View open tabs

Can see URLs and titles of all open tabs

Medium
Show notifications

Can display desktop notifications outside the browser

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
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

Info
https://*.app.userback.io/capture/*

No additional information available.

Info
https://*.app.userback.io/viewer/*

No additional information available.

Info
https://app.userback.io/login/?redirect=extension

No additional information available.

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Scan performed by extenshi.io · Oct 22, 2026
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