Sec-File-Upload-Validator

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys verdict, risk, mitigation. Review file upload validation that trusts filename extension and client Content-Type.

{
  "metrics": {
    "correct": {
      "checks": [
        {
          "contains": [
            "content type"
          ]
        },
        {
          "contains": [
            "extension"
          ]
        },
        {
          "contains": [
            "magic"
          ]
        },
        {
          "contains": [
            "size"
          ]
        },
        {
          "contains": [
            "upload"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "MIME sniff"
          ]
        },
        {
          "contains": [
            "malware"
          ]
        },
        {
          "contains": [
            "store outside web root"
          ]
        },
        {
          "contains": [
            "random name"
          ]
        },
        {
          "contains": [
            "allowlist"
          ]
        }
      ]
    }
  }
}