---
id: CVE-2026-62316
title: >-
  Microsoft UFO open-source framework for intelligent automation across devices
  and platforms
summary: >-
  Microsoft UFO open-source framework for intelligent automation across devices
  and platforms. Prior to 3.0.8, ufo/client/mcp/http_servers/linux_mcp_server.py
  binds a FastMCP streamable HTTP server to localhost:8010 but does not validate
  t…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-200
  - CWE-346
vendor: microsoft
product: UFO
affected:
  - UFO < 3.0.8
published: '2026-08-21'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:06:39.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-62316'
references:
  - url: >-
      https://github.com/microsoft/UFO/commit/3851c5d4e17c2865c56a94a6530692bf6e7a9b02
    label: security-advisories@github.com
  - url: 'https://github.com/microsoft/UFO/releases/tag/v3.0.8'
    label: security-advisories@github.com
  - url: 'https://github.com/microsoft/UFO/security/advisories/GHSA-vf4c-mf32-gf2h'
    label: security-advisories@github.com
  - url: 'https://github.com/microsoft/UFO/security/advisories/GHSA-vf4c-mf32-gf2h'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-25T14:19:30.120280Z'
ingestedAt: '2026-09-11T21:23:22.283Z'
epss: 0.0051
epssPercentile: 0.40928
---

## Overview

Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.8, ufo/client/mcp/http_servers/linux_mcp_server.py binds a FastMCP streamable HTTP server to localhost:8010 but does not validate the Host, Origin, or Sec-Fetch-Site headers. An attacker-controlled web page can use DNS rebinding to reach the local /mcp endpoint, enumerate tool schemas through tools/list, and invoke execute_command with a valid UFO_MCP_API_KEY to read files or execute allowed operating system commands as the victim's user. This issue is fixed in version 3.0.8.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.