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Encoding-Chain Injection

🟠 HIGH injection proven AVE-2025-0091

· aka: Multi-Encoding Bypass

Summary

Injection payload encoded through multiple layers (Base64 → URL encoding → Unicode) to evade pattern-matching filters.

Blast Radius

All single-layer encoding filters bypassed.

Prerequisites

Agent with input filtering that checks single encoding.

Environment

  • Frameworks: LangGraph
  • Models tested: [Available in NAIL SDK]
  • Multi-agent: No
  • Tools required: No
  • Memory required: No

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