{
  "claim_outcome": "confirmed",
  "claim_block_reason": null,
  "repro_result": "confirmed",
  "validated_surface": "network_service",
  "evidence_scope": "production_path",
  "claimed_impact_class": "access_control_bypass_file_rename_and_retrieval",
  "observed_impact_class": "authz_bypass",
  "exploitability_confidence": "high",
  "attacker_controlled_input": "RNFR path argument prefixed with /proc/self/root",
  "trigger_path": "ProFTPD RNFR command handler -> dir_canonical_path() -> dir_check()",
  "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
}