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CAPFRAME
← leaderboard/OpenAI Docs MCP/tool · get_openapi_spec
§ toolhttpOpenAI Docs MCP

get_openapi_spec

on https://developers.openai.com/mcp

Severity

critical0
high0
medium1
low0
info0

1 finding on this tool

  1. mediumunconstrained inputf-r1-get_openapi_spec

    Tool `get_openapi_spec` accepts unconstrained string input

    The following string parameter(s) have no `maxLength` constraint: `url`. 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

get_openapi_spec is one of 5 tools exposed by OpenAI Docs MCP. The server scored 88/100 overall against the capframe rule engine (source: http). Last scanned 2026-06-05.

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