server-filesystem

The server demonstrates strong security practices with explicit path normalization, comprehensive symlink resolution (via `fs.realpath` and `isPathWithinAllowedDirectories`) to prevent traversal attacks, and strict enforcement of allowed directories. File write operations use atomic renames and the 'wx' flag to prevent race conditions and overwrites through existing symlinks. Dynamic allowed directories via MCP Roots are also validated. No hardcoded secrets or 'eval' usage observed. The primary risk lies in misconfiguring the allowed directories or if an attacker could bypass the `validatePath` function before any file operation.