Is EuroSaver – Amazon Europe Price Comparison safe?

Low risk

EuroSaver sends the Amazon marketplace country from product pages to eurosaver.net for banner selection.

When you open a supported Amazon European product page, EuroSaver checks the page and requests banner content from eurosaver.net. The reviewed source shows that request includes the Amazon marketplace country and a banner selector parameter.

Foundere Developerv1.4.7Chrome Web Store
20Risk
Who publishes it

Foundere Developer - no other listings under this identity, 2 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Foundere Developer
Website
eurosaver.net/de/welcome#troubleshooting

Shared hosts - 2 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

eurosaver.net
Also called by 1 other listing: EuroSaver - Amazon Europe Price Comparison
realtime.eurosaver.net
Also called by 1 other listing: EuroSaver - Amazon Europe Price Comparison

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Findings

Extension relays Amazon price checks through a remote WebSocket

EuroSaver runs a background WebSocket client, on by default, connecting to realtime.eurosaver.net.

It can receive ASIN and country tasks, fetch product pages across Amazon locales, extract price data, and send results to eurosaver.net.

Severity
Medium unwanted
Type
Unexpected
CWE
CWE-506
Source
Dynamic sandbox
What actually happens
You did this

A remote-config-dependent WebSocket task supplies an Amazon ASIN and country.

The extension did this

The extension fetches Amazon product pages, extracts price data from page content, and sends the result to eurosaver.net.

Captured request
POSTrealtime.eurosaver.net/ws; eurosaver.net/api/price/{asin}/{country}
Fields in the request
  • Amazon product URL
    https://www.amazon.de/dp/B0EXAMPLE (illustrative)

    Identifies the product page or locale page involved in the price lookup.

  • Amazon page content
    Amazon product page HTML containing price text (illustrative)

    Provides page material used to parse current product pricing.

Observation

Observed during dynamic analysis: the extension opened the realtime.eurosaver.net WebSocket while the WebSocket client setting was enabled, supporting the background price-task behavior recorded in the claim.

What it can do

Permissions this extension asks for, as declared in version 1.4.7. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on www.amazon.de

    *://www.amazon.de/*

  • Read and change your data on www.amazon.fr

    *://www.amazon.fr/*

  • Read and change your data on www.amazon.it

    *://www.amazon.it/*

  • Read and change your data on www.amazon.es

    *://www.amazon.es/*

  • Read and change your data on www.amazon.nl

    *://www.amazon.nl/*

  • Read and change your data on www.amazon.se

    *://www.amazon.se/*

  • Read and change your data on www.amazon.co.uk

    *://www.amazon.co.uk/*

  • Read and change your data on www.amazon.com.be

    *://www.amazon.com.be/*

  • Read and change your data on www.amazon.pl

    *://www.amazon.pl/*

  • Read and change your data on www.amazon.ie

    *://www.amazon.ie/*

  • Read and change your data on www.amazon.com

    *://www.amazon.com/*

  • Read and change your data on www.amazon.ca

    *://www.amazon.ca/*

  • Read and change your data on www.amazon.com.mx

    *://www.amazon.com.mx/*

  • Read and change your data on www.amazon.com.br

    *://www.amazon.com.br/*

  • Read and change your data on www.amazon.co.jp

    *://www.amazon.co.jp/*

  • Read and change your data on www.amazon.in

    *://www.amazon.in/*

  • Read and change your data on www.amazon.com.au

    *://www.amazon.com.au/*

  • Read and change your data on www.amazon.sg

    *://www.amazon.sg/*

  • Read and change your data on www.amazon.ae

    *://www.amazon.ae/*

  • Read and change your data on www.amazon.sa

    *://www.amazon.sa/*

  • Read and change your data on www.amazon.com.tr

    *://www.amazon.com.tr/*

  • Read and change your data on www.amazon.eg

    *://www.amazon.eg/*

  • Act on the current tab, but only after you click the extension

    activeTab

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed EuroSaver – Amazon Europe Price Comparison contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • eurosaver.net

    EuroSaver – Amazon Europe Price Comparison sends data to eurosaver.net. No other extension we have analysed sends data here.

Updated 30 September 2026ofiokjopppicpjjnklicjlnenhabhfhf