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        "cveId": "CVE-2026-85661",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-09-04T13:32:27.956Z",
        "datePublished": "2026-09-04T14:32:18.828Z",
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            "datePublic": "2026-07-08T00:00:00.000Z",
            "title": "excel-mcp-server 0.1.8 Arbitrary File Read/Write via stdio mode",
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                    "lang": "en",
                    "value": "excel-mcp-server 0.1.8 fails to enforce path confinement in stdio mode when EXCEL_FILES_PATH is unset, allowing attackers to read and write arbitrary files. Attackers can supply unchecked file paths to read and write tools to access any file accessible to the process."
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                            "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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                            "type": "CWE"
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                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
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                {
                    "url": "https://github.com/haris-musa/excel-mcp-server/issues/149",
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                    "name": "GitHub Issue #149"
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            {
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                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-85661",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "yes"
                                    },
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                                        "Technical Impact": "total"
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                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-09-14T19:20:06.345946Z"
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