CVE WatchJul 16, 2026

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

CVSS

6.5

Medium

EPSS

—

KEV

—

Exploit Today

0-100

Published: Jul 16, 2026 · Last modified: Jul 16, 2026 · CWE-400 · CWE-862

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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