PT-2026-60496 · Microsoft · Ufo

CVE-2026-55440 · Published 2026-07-16 · Updated 2026-07-16

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Exploit

Fix

Resource Exhaustion

Missing Authorization

Weakness Enumeration

CWE-400

CWE-862

Related Identifiers

CVE-2026-55440

Affected Products

Ufo

References · 4

• 🔥 https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-55440 · Security Note
• https://github.com/microsoft/UFO/releases/tag/3.0.7 · Note
• https://github.com/microsoft/UFO/commit/cc653bde75337ab60c320e6b7cb61b86ba6ca948 · Note