@modelcontextprotocol/server-filesystem vulnerability allows for path validation bypass via colliding path prefix
Versions of Filesystem prior to 0.6.3 & 2025.7.1 could allow access to unintended files in cases where the prefix matches an allowed directory. Users are advised to upgrade to 2025.7.1 to resolve the issue.
Thank you to Elad Beber (Cymulate) for reporting these issues.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @modelcontextprotocol/server-filesystem | <= 0.6.2, >= 2025.1.14, < 2025.7.1 | 2025.7.1 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:H/SI:H/SA:H- Weakness (CWE)
CWE-22- Platform
- npm
- Package
@modelcontextprotocol/server-filesystem- Disclosed
- 01.07.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-hc55-p739-j48w - CC BY 4.0
Vulnerability history: @modelcontextprotocol/server-filesystem
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 07.2025 07.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2025: 2
- 2026: 0
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@modelcontextprotocol/server-filesystem vulnerability allows for path validation bypass via colliding path prefix this entry
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