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Threatist priority CRITICAL 0 HIGH 1 MEDIUM 1 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 1 No fix listed 1 Has CVE 2

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Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 2 No user interaction 2

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Weakness (CWE) CWE-22 Improper Limitation of a Pathname to a Restricted Directory 2

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TI-2026-58773 CVE-2026-85661 · GHSA-xv88-r947-5c3v

excel-mcp-server 0.1.8 Arbitrary File Read/Write via stdio mode

Priority MEDIUM 49

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.

CVSS 4.0CRITICAL 9.3· Network · No auth · No interaction · EPSS 0.00687 · Published 2026-09-04 · No fix listed CWE-22

TI-2026-29316 CVE-2026-40576 · GHSA-j98m-w3xp-9f56

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in excel-mcp-server

Priority HIGH 80

excel-mcp-server is a Model Context Protocol server for Excel file manipulation.

CVSS 3.1CRITICAL 9.4· Network · No auth · No interaction · EPSS 0.00465 · Published 2026-04-21 · Fixed in 0.1.8 CWE-22

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