GHSA-hc55-p739-j48w
@modelcontextprotocol/server-filesystem vulnerability allows for path validation bypass via colliding path prefix
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @modelcontextprotocol/server-filesystem | <= 0.6.2 | no fix listed |
| npm | @modelcontextprotocol/server-filesystem | >= 2025.1.14, < 2025.7.1 | 2025.7.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.