CVE-2025-67366

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Source

https://cve.org/CVERecord?id=CVE-2025-67366

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67366.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-67366

Published

2026-01-07T17:16:01.893Z

Modified

2026-03-13T03:42:04.897417Z

Severity

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

Summary

[none]

Details

@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.

References

Affected packages

Git / github.com/SylphxAI/filesystem-mcp

Affected ranges

Type

GIT

Repo

https://github.com/SylphxAI/filesystem-mcp

Events

Introduced

Last affected

90b9780d6b745b41b464676b4c630a9bcbc5acf6

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.5.8"
        }
    ]
}

Affected versions

v0.*

v0.5.0

v0.5.1

v0.5.2

v0.5.3

v0.5.5

v0.5.6

v0.5.7

v0.5.8

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67366.json"