CVE-2026-46416
Microsoft UFO shared WebSocket handler state causes cross-client response hijacking
Description
Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO creates one shared UFOWebSocketHandler instance and reuses it for multiple authenticated WebSocket connections. The handler stores per-connection protocol objects in mutable instance fields. Each new WebSocket connection overwrites those fields. Later, message handlers send responses through the shared fields instead of through protocol objects bound to the originating connection. As a result, the most recently connected authenticated client can receive protocol responses that belong to another authenticated client.
INFO
Published Date :
May 27, 2026, 9:56 p.m.
Last Modified :
May 27, 2026, 9:56 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-46416
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Microsoft UFO to version 3.0.1-4-ge2626659 or later.
- Apply vendor patches and updates immediately.
- Review connection handling for shared resources.
- Test for proper data isolation.
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The following list is the news that have been mention
CVE-2026-46416 vulnerability anywhere in the article.