v0.2.0 · live
CAPFRAME
← leaderboard/server-filesystem/tool · directory_tree
§ toolsandboxserver-filesystem

directory_tree

on npm:@modelcontextprotocol/server-filesystem@2026.1.14

Severity

critical0
high0
medium1
low0
info0

1 finding on this tool

  1. mediumunconstrained inputf-r1-directory_tree

    Tool `directory_tree` accepts unconstrained string input

    The following string parameter(s) have no `maxLength` constraint: `path`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

    fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

    OWASP LLM01NIST MEASURE-2.3ATLAS T0051

About this tool

directory_tree is one of 14 tools exposed by server-filesystem. The server scored 64/100 overall against the capframe rule engine (source: sandbox). Last scanned 2026-06-05.

The findings above are emitted by the public capframe.findings.v1 schema. Disagree with one? Open an issue.