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Vulnerability record · CVE-2026-62316 · published 21 August 2026

CVE-2026-62316: Information exposure vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.51% · top 58.9% CWE-200 · Information exposureCWE-346 · Origin validation error Deferred
8.8CVSS 3.1 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-62316), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.