extenshi.io
SECURITY REPORT · EXTENSHI SCAN

U4B Cashback

Firefox extension·by u4b
59
/ 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

U4B Cashback's safety score vs every other extension we've scanned
Globally
5%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 403,022 extensions
In Shopping
3%of shopping extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 4,482 shopping extensions
Findings
53
median 6Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
6
median 4Declared in manifest
Active users
5
median 3vs category median

Findings breakdown

Automated security signal · 53 distinct issues across 6 severities
53
distinct issues
detected
Scanners reported 68 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

4 risky permissions of 6 total
4 high-risk permissions require attention
This extension requests 6 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
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
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

Medium
Store local data

Can save data locally in the browser for persistence

Info
*://*/*

No additional information available.

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Scan performed by extenshi.io · Aug 24, 2026
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