# CVE-2026-46414: Microsoft UFO role spoofing and task hijacking in WebSocket control plane

Source: https://junglewise.ai/threats/cve-2026-46414-microsoft-ufo-role-spoofing-and-task-hijacking-in-websocket  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-27. Updated: 2026-05-27  
License: CC BY 4.0 with a link back

CVE-2026-46414 · Severity: high · CVSS 8.8 · Published 2026-05-27

Microsoft UFO is an open-source framework used for automating tasks across different devices and platforms. A security flaw in its communication system allows an authorized user to impersonate a high-privilege controller. This enables an attacker to hijack other connected devices, send them unauthorized commands, or disrupt the operations of other users by overwriting their active sessions.

Technologies: [Microsoft UFO](https://junglewise.ai/threats/technologies/ufo). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-46414 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-46414 being exploited in the wild.

**How severe is CVE-2026-46414?** High severity, with a CVSS score of 8.8, published 27 May 2026.

**Which products and versions are affected?** Microsoft UFO 3.0.1-4-ge2626659.

**Is there a fix for CVE-2026-46414?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-46414 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-46414?** Check whether you run Microsoft UFO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the WebSocket control plane of Microsoft UFO (specifically within `ufo/server/ws/handler.py`). The server fails to enforce the role and identity established during the initial connection registration, instead trusting 'client_type' and 'target_id' fields provided in subsequent TASK messages. An attacker with a valid server token can register as a standard device and then send messages claiming the 'constellation' role to dispatch tasks to any other connected device. Additionally, the `ClientConnectionManager` lacks uniqueness checks, allowing an attacker to overwrite existing client registrations by reusing a `client_id`. This combination of flaws allows for unauthorized task execution on peer devices and session hijacking.

## Affected products

- Microsoft UFO 3.0.1-4-ge2626659

## Timeline

- 2026-05-14: advisory: GitHub Security Advisory published
- 2026-05-27: disclosed: CVE published to NVD

## References

- [https://github.com/microsoft/UFO/security/advisories/GHSA-qgx6-cvhg-jw7p](https://github.com/microsoft/UFO/security/advisories/GHSA-qgx6-cvhg-jw7p)

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