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CVE-2026-104634 beam_mcp: JSON boolean and null tool arguments reach dispatch as strings

🗓️ 08 Oct 2026 13:41:05Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Incorrect Type Conversion in ScriptKittyOS beam_mcp allows JSON booleans to reach dispatch.

Related
Affected
Refs
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:scriptkittyos:beam_mcp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.BeamMCP.Server'"
    ],
    "packageName": "beam_mcp",
    "packageURL": "pkg:hex/beam_mcp",
    "product": "beam_mcp",
    "programFiles": [
      "lib/beam_mcp/server.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.BeamMCP.Server':handle_message/2"
      },
      {
        "name": "'Elixir.BeamMCP.Server':normalize_arguments/2"
      },
      {
        "name": "'Elixir.BeamMCP.Server':to_json_value/1"
      }
    ],
    "repo": "https://github.com/ScriptKittyOS/beam_mcp",
    "vendor": "ScriptKittyOS",
    "versions": [
      {
        "lessThan": "0.10.1",
        "status": "affected",
        "version": "0.1.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:scriptkittyos:beam_mcp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.BeamMCP.Server'"
    ],
    "packageName": "scriptkittyos/beam_mcp",
    "packageURL": "pkg:github/scriptkittyos/beam_mcp",
    "product": "beam_mcp",
    "programFiles": [
      "lib/beam_mcp/server.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.BeamMCP.Server':handle_message/2"
      },
      {
        "name": "'Elixir.BeamMCP.Server':normalize_arguments/2"
      },
      {
        "name": "'Elixir.BeamMCP.Server':to_json_value/1"
      }
    ],
    "repo": "https://github.com/ScriptKittyOS/beam_mcp",
    "vendor": "ScriptKittyOS",
    "versions": [
      {
        "lessThan": "289dbdbad641943b29a3b8d1eb36506cc8cec10a",
        "status": "affected",
        "version": "083838eb8e17fe5f6fcaf761bdbe203110288b0b",
        "versionType": "git"
      }
    ]
  }
]

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