CVE-2026-105789

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Source

https://cve.org/CVERecord?id=CVE-2026-105789

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105789.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-105789

Aliases

GHSA-85w2-wggf-rw49

Published

2026-10-06T14:07:25Z

Modified

2026-10-07T02:47:27Z

Severity

5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L CVSS Calculator

Summary

Microsoft UFO: Arbitrary file write in the Linux MCP `execute_command` tool

Details

Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the execute_command tool in ufo/client/mcp/http_servers/linux_mcp_server.py treats sort and uniq as read-only commands while the free-form command parameter can select their file-output forms. An authenticated caller can use sort -o or the optional second uniq operand to create or overwrite files writable by the UFO server process without shell metacharacters, because the allowed binary opens the destination itself and the argument policy does not reject the operation. This can corrupt configuration or other writable data and disrupt the service, but the demonstrated primitive does not directly disclose files or establish arbitrary code execution. This issue is fixed in version 3.0.9.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-184",
        "CWE-88"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105789.json"
}

References

Affected packages

Git / github.com/microsoft/ufo

Affected ranges

Type

GIT

Repo

https://github.com/microsoft/ufo

Events

Introduced

Fixed

be75a7ded2ad98d97819e15ff1b39d4202ac3ac5

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.0.9"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

3.*

3.0.6

3.0.7

v3.*

v3.0.0

v3.0.1

v3.0.2

v3.0.3

v3.0.4

v3.0.8

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105789.json"