CVE-2026-62316

Microsoft UFO: DNS Rebinding → Unauthenticated File Read / Command Execution

State: Published
Severity: 8.8 High
Published: Aug 21, 2026
Updated: Aug 25, 2026
Reserved: Jul 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-346 Origin Validation Error

Affected Products

Product	Versions
UFOmicrosoft	< 3.0.8Affected

References

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