extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Container Color Theme

Firefox extension·by Sean Hugo
51
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

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

Container Color Theme's safety score vs every other extension we've scanned
Globally
40%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,636 extensions
In Appearance
14%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 18,905 appearance extensions
Findings
7
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 2Declared in manifest
Active users
18
median 3vs category median

Findings breakdown

Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected

Permissions requested

3 risky permissions of 6 total
1 critical permission require attention
This extension requests 6 permissions in total. 3 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
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

High
View open tabs

Can see URLs and titles of all open tabs

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Container tabs

Can manage Firefox container tabs and their identities

Low
Customize theme

Can change the browser theme appearance

Are you the author of Container Color Theme?

Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.

Claim this extension

Add the badge to your README

Show Container Color Theme's live security score on GitHub or in your docs
Extenshi security score badge preview
Markdown
[![Extenshi security score](https://catalog.extenshi.io/api/badge/127419)](https://catalog.extenshi.io/extensions/127419/security)
HTML
<a href="https://catalog.extenshi.io/extensions/127419/security"><img src="https://catalog.extenshi.io/api/badge/127419" alt="Extenshi security score" /></a>

The badge always shows the current score — it updates automatically after every scan.

Scan performed by extenshi.io · Aug 1, 2026
Browser extensions made transparent.