Is Kleo Network safe?
Kleo Network is medium risk. When you close Kleo Network's update page without an explicit choice, it opts the browser into all-sites collection mode, then opens a WebSocket to ws.kleo-extension.online, coordinating collection of page URLs, DOM content, and tab info.
Who publishes itkleo-extension-publisher - no other listings under this identity, 1 shared hostname
kleo-extension-publisher - no other listings under this identity, 1 shared hostname
What this publisher told the store about itself, and the other listings that told it the same thing.
Shared hosts - 1 hostname
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.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
Publishers can request a review.
Findings
Kleo update tab auto-enables all-sites WebSocket collection.
When you close Kleo Network's update page without an explicit choice, it opts the browser into all-sites collection mode, then opens a WebSocket to ws.kleo-extension.online, coordinating collection of page URLs, DOM content, and tab info.
- Severity
- Medium unwanted
- Type
- Unexpected
- CWE
- CWE-359
- Source
- Dynamic sandbox
The user closes the Kleo update tab while no explicit user status is stored.
The extension records an opt-in state, starts the Kleo SDK, and enables all-sites WebSocket collection.
- Page URLhttps://example.com/account (illustrative)
Shows the site or page being visited and can reveal browsing context.
- DOM content<main>Account settings</main> (illustrative)
Contains page text and structure that may include data displayed on the page.
- Tab informationactive tab with title Example Account (illustrative)
Provides browser-tab context associated with the collected page data.
Dynamic analysis confirmed that the update-tab close path records an opt-in status when no explicit choice exists, starts the Kleo SDK, and connects to the WebSocket endpoint used for remote crawl tasks.
What it can do
Permissions this extension asks for, as declared in version 4.6. 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 every site you visit
<all_urls>
Store data in your browser
storage
Show a panel beside the page
sidePanel