CVE-2026-46416 (GCVE-0-2026-46416)

Vulnerability from cvelistv5 – Published: 2026-05-27 21:56 – Updated: 2026-05-28 13:01
VLAI
Title
Microsoft UFO shared WebSocket handler state causes cross-client response hijacking
Summary
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.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-284 - Improper Access Control
  • CWE-488 - Exposure of Data Element to Wrong Session
Assigner
References
Impacted products
Vendor Product Version
microsoft UFO Affected: 3.0.1-4-ge2626659
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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