{
  "claim_outcome": "confirmed",
  "claim_block_reason": null,
  "repro_result": "confirmed",
  "validated_surface": "api_remote",
  "evidence_scope": "production_path",
  "claimed_impact_class": "authz_bypass",
  "observed_impact_class": "authz_bypass",
  "exploitability_confidence": "high",
  "attacker_controlled_input": "URL http://[::ffff:127.0.0.1]:18080/ passed to download_media tool via MCP JSON-RPC tools/call",
  "trigger_path": "MCP tools/call download_media -> assertSafeUrl() -> isPrivateV6() hex-normalization bypass -> ctx.request.get() fetches loopback 127.0.0.1:18080",
  "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
}