{
  "claim_outcome": "confirmed",
  "repro_result": "confirmed",
  "evidence_scope": "production_path",
  "observed_impact_class": "code_execution",
  "claimed_impact_class": "code_execution",
  "exploitability_confidence": "high",
  "attacker_controlled_input": "protocol-4 pickle file: GLOBAL module='nltk.tokenize' name='stanford_segmenter.os.system' + REDUCE with attacker shell command",
  "trigger_path": "nltk.tokenize.punkt.punkt_pickle_load -> nltk.picklesec.AllowlistUnpickler.find_class (module-prefix allowlist passes, dotted name getattr-chains to os.system)",
  "claimed_surface": "library_api",
  "validated_surface": "library_api",
  "end_to_end_target_reached": true,
  "sanitizer_used": false,
  "crash_observed": false,
  "read_write_primitive_observed": false,
  "exploit_chain_demonstrated": true,
  "accepted_exploit_knowledge_record_ids": [
    "7107ffa0-87e5-4cc7-8db5-5be77e3afd45"
  ],
  "inferred": false
}