CVE-2025-67366_CVE-2025-67366

7.5 / 10

HIGH

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

Description

@sylphxltd/filesystem-mcp v0.5.8 is an MCP server that provides file content reading functionality. Version 0.5.8 of filesystem-mcp contains a critical path traversal vulnerability in its "read_content" tool. This vulnerability arises from improper symlink handling in the path validation mechanism: the resolvePath function checks path validity before resolving symlinks, while fs.readFile resolves symlinks automatically during file access. This allows attackers to bypass directory restrictions by leveraging symlinks within the allowed directory that point to external files, enabling unauthorized access to files outside the intended operational scope.

Basic Information

ID CVE-2025-67366

Source mitre

Published Jan 7, 2026 at 00:00

Modified Jan 7, 2026 at 17:18

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-23

References

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    "published": "2026-01-07T00:00:00.000Z",
    "modified": "2026-01-07T17:18:19.832Z",
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    "references": "https://github.com/sylphxltd/filesystem-mcp/issues/134\nhttps://github.com/sylphxltd/filesystem-mcp",
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