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CAPFRAME
← leaderboard/Firecrawl MCP/tool · firecrawl_monitor_run
§ toolsandboxFirecrawl MCP

firecrawl_monitor_run

on npm:firecrawl-mcp@3.20.2

Severity

critical0
high0
medium2
low0
info0

2 findings on this tool

  1. mediumunconstrained inputf-r1-firecrawl_monitor_run

    Tool `firecrawl_monitor_run` accepts unconstrained string input

    The following string parameter(s) have no `maxLength` constraint: `id`. 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
  2. mediumindirect injectionf-r6-firecrawl_monitor_run

    Tool `firecrawl_monitor_run` fetches external web content -- indirect-injection surface

    Description: " Trigger a monitor check immediately, outside its normal schedule. Returns the queued check. **Usage Example:** ```json { "name": "firecrawl_monitor_run", "arguments": { "id": "mon_abc123" } } ``` " -- this tool pulls externally-controlled content into the agent's context window, the canonical indirect-injection vector. Even when the user supplies the URL, content at that URL can carry hostile instructions.

    fix: Sandbox the fetched content: strip prompts before forwarding to the model, constrain to an allow-list of domains, and route through capframe-guard with a `domain in [...]` caveat.

    OWASP LLM01NIST MEASURE-2.3ATLAS T0051

About this tool

firecrawl_monitor_run is one of 20 tools exposed by Firecrawl MCP. The server scored 0/100 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.