@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
| Link | Resource |
|---|---|
| https://github.com/sylphxltd/filesystem-mcp | Product |
| https://github.com/sylphxltd/filesystem-mcp/issues/134 | Exploit Third Party Advisory |
Configurations
History
29 Jan 2026, 01:02
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/sylphxltd/filesystem-mcp - Product | |
| References | () https://github.com/sylphxltd/filesystem-mcp/issues/134 - Exploit, Third Party Advisory | |
| First Time |
Sylphx filesystem-mcp
Sylphx |
|
| CPE | cpe:2.3:a:sylphx:filesystem-mcp:0.5.8:*:*:*:*:node.js:*:* |
07 Jan 2026, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-23 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
07 Jan 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-07 17:16
Updated : 2026-01-29 01:02
NVD link : CVE-2025-67366
Mitre link : CVE-2025-67366
CVE.ORG link : CVE-2025-67366
JSON object : View
Products Affected
sylphx
- filesystem-mcp
CWE
CWE-23
Relative Path Traversal