CVE-2025-67366
HIGH
MEDIUM
Priority: 0.05
BB Relevance:
75/100
Published: 2026-01-07
Modified: 2026-11-04
First seen: 2026-11-04
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
None
A:
None
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| sylphx | filesystem_mcp | 0.5.8 |
References & Advisories (2)
Product
Exploit
Third Party Advisory