Is Diigo Web Collector - Capture and Annotate safe?

Medium risk

Diigo Web Collector lets any matched webpage request Diigo bookmark/account context through unchecked messages.

The extension's content script accepts page messages without checking their origin or source, so a webpage can ask for Diigo bookmark and account context and receive the response through a page-controlled frame. The same message handler can also make the extension fetch an arbitrary image URL and upload it to Diigo, or create Diigo lists, using the signed-in user's Diigo account.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Diigov3.5.0Chrome Web Store
45Risk
Who publishes it

Diigo - no other listings under this identity, 24 shared hostnames

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

Shared hosts - 24 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.

65975.xml.premiumxml.com
Also called by 1 other listing: Diigo Web Collector - Capture and Annotate
appchangelog.com
Also called by 1 other listing
blog.diigo.com
Also called by 1 other listing
diigo.cn
Also called by 1 other listing: Diigo Web Collector - Capture and Annotate
groups.diigo.com
Also called by 1 other listing
help.diigo.com
Also called by 1 other listing
miniajax.com
Also called by 1 other listing: Diigo Web Collector - Capture and Annotate
resources.diigo.com
Also called by 1 other listing: Diigo Web Collector - Capture and Annotate
secure.diigo.com
Also called by 1 other listing
toolbar3.diigo.cn
Also called by 1 other listing
toolbar3.diigo.com
Also called by 1 other listing
ebookee.org
Also called by 2 other listings, including Search All
paoniu8.blogbus.com
Also called by 2 other listings, including Search All
pricegrabber.com
Also called by 2 other listings, including Search All
pricewatch.com
Also called by 2 other listings, including Search All
s.etao.com
Also called by 2 other listings
search.360buy.com
Also called by 2 other listings
searcho.com
Also called by 2 other listings
shopping.com
Also called by 2 other listings
api.hostip.info
Also called by 3 other listings
preview.diigo.com
Also called by 3 other listings, including Awesome Screen Recorder, Awesome Screenshot
zurb.com
Also called by 3 other listings
foodnetwork.com
Also called by 5 other listings
zachstronaut.com
Also called by 5 other listings, including ReClipped

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

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 3.5.0. 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.diigo.com

    https://www.diigo.com/

  • Read and change your data on every site you visit

    <all_urls>

  • Add items to the right-click menu

    contextMenus

  • See the address and title of every tab you have open

    tabs

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • Store data in your browser

    storage

  • Run its own code inside the pages you visit

    scripting

  • Save the full contents of any page you visit

    pageCapture

Where it sends data

Destinations our analysis observed Diigo Web Collector - Capture and Annotate 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.

  • toolbar3.diigo.com

    Diigo Web Collector - Capture and Annotate sends data to toolbar3.diigo.com. No other extension we have analysed sends data here.

  • matched webpage

    Diigo Web Collector - Capture and Annotate sends data to matched webpage. Named as a recipient in this extension's own analysis.

Updated 30 September 2026pnhplgjpclknigjpccbcnmicgcieojbh