CVE-2026-55440

Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.7, the COMMAND_RESULTS handler in ufo/server/ws/handler.py called get_or_create_session in ufo/server/services/session_manager.py without owner_client_id, allowing an authenticated client to create an unowned attacker-chosen session_id such as constellation_task_id = f"{task_name}@{task_id}" and deny the legitimate owner or exhaust memory with phantom sessions. This issue is fixed in version 3.0.7.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/microsoft/UFO/commit/cc653bde75337ab60c320e6b7cb61b86ba6ca948
https://github.com/microsoft/UFO/releases/tag/3.0.7
https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf
https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf

Configurations

No configuration.

History

16 Jul 2026, 17:16

Type	Values Removed	Values Added
References	~~() https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf -~~	() https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf -

16 Jul 2026, 16:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-16 16:19

Updated : 2026-07-16 17:46

NVD link : CVE-2026-55440

Mitre link : CVE-2026-55440

CVE.ORG link : CVE-2026-55440

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-862

Missing Authorization

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