{
  "claim_outcome": "confirmed",
  "claim_block_reason": null,
  "repro_result": "confirmed",
  "validated_surface": "network_protocol",
  "evidence_scope": "production_path",
  "claimed_impact_class": "other",
  "observed_impact_class": "other",
  "exploitability_confidence": "high",
  "attacker_controlled_input": "raw bytes on an established hixie-75 WebSocket TCP connection: 0x80 0xFF 0xFF 0xFF 0x7F overlong length header followed by a valid sentinel text frame",
  "trigger_path": "TCP loopback -> Driver.server() -> Draft75.parse() -> _parseLeadingByte() -> stage-1 base-128 length accumulator (no _maxLength guard) -> stage-2 skip mode consumes/misframes the following sentinel text frame",
  "end_to_end_target_reached": true,
  "sanitizer_used": false,
  "crash_observed": false,
  "read_write_primitive_observed": false,
  "exploit_chain_demonstrated": true,
  "blocking_mitigation": null,
  "inferred": false
}