CVE-2026-46414CWE-290CWE-639CWE-862

Microsoft UFO WebSocket role spoofing allows authenticated peer task hijacking

High · published May 27, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
57.8
In the wild
Unconfirmed
What it is

Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO's WebSocket control plane trusts client-supplied identity and role fields in task messages. A client connection can register as a normal device, but later send a TASK message claiming client_type="constellation" and target_id=<victim-device-id>. The server trusts the role and target values from the wire message rather than enforcing the role registered for that WebSocket connection. As a result, any authenticated WebSocket client with the shared server token can spoof the higher-privilege constellation role and dispatch attacker-controlled tasks to another connected device. The same client registry also allows duplicate client_id registration, overwriting an existing live client's stored websocket, role, and task protocol. This is an authenticated WebSocket role/identity spoofing issue leading to peer task hijacking.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00853 · 57.8th percentile
Weaknesses
CWE-290 · Authentication Bypass by Spoofing; CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-862 · Missing Authorization
Published
2026-05-27T21:54Z
EPSS history
Timeline
  • 27 MAY 21:54Z
    Microsoft UFO WebSocket role spoofing allows authenticated peer task hijacking
    cvelistv5