Firefox Add-ons

16Versions

0Code reviewed

Not reviewed

No code review on record

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108 indicators in this extension

108 indicators

0 versions analysed

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What our analysis found

CSFloat Market Checker, used by 75,547 people, is not yet reviewed by Extension Auditor. Its permissions mean it can inject scripts into pages. It comes from a publisher with 2 extensions and was last updated in July 2026.

CSFloat Market Checker Firefox extension security report

ID: csgofloat

Extension Info & Metadata

Status

Active

Version

5.16.0

Size

6.61 MB

Rating

4.0/5

Reviews

132

Users

75,547

Type

Extension

Updated

Jul 17, 2026

Publisher Contextual Analysis

Author: CSFloat
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

154,717

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Screenshots & videos

Install growth

User Growth

Showing data from Sep 13, 2023 to Sep 12, 2024

Versions

+0.77%(+596 users)

Compared to 3 months ago

3 versions released in this period

Rating Count

Total: 92 ratings+1 (1%)

Average Rating

Current: 4.00 / 5.0-0.48

See plans

React Flow

Internal permhash`1bf13aa4e2…`
No malicious matches

1 other extension carries this fingerprint, none of them known malicious.

Withheldnot flagged

Permhash (Mandiant)`ff4a729b46…`
No malicious matches

8 other extensions carry this fingerprint, none of them known malicious.

Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
+1 more

Network indicators

107 URLs and 1 IP literals were extracted from this version.

Item	Type	Severity	Description
scripting	Permission	Critical	This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
declarativeNetRequestWithHostAccess	Permission	Critical	This permission combines network request modification with host permissions. Rated Critical because it can modify requests for specific domains, potentially targeting sensitive websites with precise attack rules.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk:• 20% increase: Access to sensitive domains increases potential impact• 25% increase: Unsafe code evaluation capabilities increase attack surface
Unsafe WebAssembly Execution	Risk Factor	High	This extension's CSP allows "wasm-unsafe-eval".
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
://.steamcommunity.com/market/listings/730/*	Host	Medium	Host permission — access limited to this URL pattern.
://.steamcommunity.com/id//inventory	Host	Medium	Host permission — access limited to this URL pattern.
://.steamcommunity.com/id//tradehistory	Host	Medium	Host permission — access limited to this URL pattern.
://.steamcommunity.com/profiles//inventory	Host	Medium	Host permission — access limited to this URL pattern.
://.csfloat.com/*	Host	Medium	Host permission — access limited to this URL pattern.
://.steampowered.com/*	Host	Medium	Host permission — access limited to this URL pattern.
Access to Sensitive Domains	Risk Factor	Medium	This extension requests access to sensitive domains: ://.steamcommunity.com/market/listings/730/*
alarms	Permission	Low	This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.

Sensitive Domain Access

This extension has access to the following sensitive domains:

*://*.steamcommunity.com/market/listings/730/*

108 indicators in this extension

108 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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About this extension

Shows the float value, paint seed, and screenshots of Counter-Strike (CS:GO & CS2) items on the Steam Market or Inventories

User reviews

2.3 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

For those that the Firefox extension doesn't work: is because the csfloat extension on here is the 5.11.0 and the actual one is the 5.14.0. Temporary you could use the Debugging feature of firefox to use the 5.14 version. Google "load temporary addon firefox manifest", download the "extension-v5.14.0-firefox.zip" from csfloat github (link on csfloat web) and follow the steps. this way doesn't updates the extension permanently, when you close the browser, the extension stays the same as before, maintaining the update from the firefox add-ons library when that happens.

cachai6·23 Mar 2026

It hasn't been working for a month now - all the skins are stuck on “Loading...”. It also crashes the Marketplace with a flood of requests that Steam flags as unwanted.

TIuBo3aBpuK·18 Mar 2026

Extension files

Browse and explore files within this extension package

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URLs

107

IPv4

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

No URLs found

No IP addresses found

108 indicators in this extension

108 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
3.2.0 Latest	0.66 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
3.2.5	0.65 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
3.3.1	0.68 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
5.3.0	0.98 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.5.0	2.41 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.6.1	2.48 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.7.0	2.49 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.8.1	2.50 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.9.0	7.87 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4
5.9.3	7.87 MB	Not scanned	—	ff4a729b4655d95cffc642bd454c2d608e61e22821579df0266c1f878a32f7e4

Showing 1 to 10 of 20 rows

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Code Diff

Compare extension code between any two versions.

0 changed files detected

No comparable text files found between these versions.

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Not reviewed

108 indicators in this extension

What our analysis found