@sylphxltd/filesystem-mcp v0.5.8 is an MCP server that provides file content reading functionality
Published Jan 7, 2026
7.5
HIGHCVSS 3.1
EPSS 0.61%
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.
Affected products
No data.
- 0.5.8
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jan 7, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Jan–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.61% (0.00610) | 47.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.54% (0.00536) | 40.73th | v5 (v2026.06.15) |
| Jan 8, 2026 | 0.05% (0.00052) | 16.58th | v4 (v2025.03.14) |
References (2)
- https://github.com/sylphxltd/filesystem-mcp Product
- https://github.com/sylphxltd/filesystem-mcp/issues/134 ExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/sylphxltd/filesystem-mcp | Product | |
| https://github.com/sylphxltd/filesystem-mcp/issues/134 | ExploitThird Party Advisory |
Change history (0)
No recorded changes yet.