What’s Vulnerable › Vulnerabilities

CVE-2026-62316: Microsoft UFO: DNS Rebinding → Unauthenticated File Read / Command Execution

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-21 · updated 2026-10-12
• Weakness: CWE-200

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.

Affected products

• microsoft UFO: before 3.0.8

References

• https://github.com/microsoft/UFO/commit/3851c5d4e17c2865c56a94a6530692bf6e7a9b02
• https://github.com/microsoft/UFO/releases/tag/v3.0.8
• https://github.com/microsoft/UFO/security/advisories/GHSA-vf4c-mf32-gf2h
• https://github.com/microsoft/UFO/security/advisories/GHSA-vf4c-mf32-gf2h

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