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SECURITY REPORT · EXTENSHI SCAN

Client Challenge

Firefox extension·by inu1255
23
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

Likely abandonedsafety score reduced by 30 points

  • No update in over 6 years
Why this matters

An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.

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

Client Challenge's safety score vs every other extension we've scanned
Globally
3%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,581 extensions
In Language Support
2%of language support extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 4,491 language support extensions
Findings
52
median 5Lower is safer
Critical findings
4
median 0Severity = Critical
Permissions
11
median 3Declared in manifest
Active users
1
median 3vs category median

Findings breakdown

Automated security signal · 52 distinct issues across 6 severities
52
distinct issues
detected
Scanners reported 499 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

5 risky permissions of 11 total
1 critical permission require attention
This extension requests 11 permissions in total. 5 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

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

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

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

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 user identity

Can get OAuth2 tokens and access your Google account identity

Info
*://*/*

No additional information available.

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Scan performed by extenshi.io · Aug 25, 2026
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