get_openapi_spec
on https://developers.openai.com/mcp
Severity
critical0
high0
medium1
low0
info0
1 finding on this tool
- 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.