ResearchResearch paperSafety & Alignment · Reinforcement Learning · Agents & Tool Use1 source · Oct 6, 2026

Surviving the Router: Optimizing Skill Injections for Retrieval and Execution

To address this limitation, we introduce CORSA (Cluster Optimization for Router-Aware Skill Attacks), a router-aware attack that optimizes skill injections for both retrieval and execution across clusters of related tasks.

Key points

  • AI agents increasingly rely on modular third-party "skills" that are dynamically selected by skill routers to execute complex tasks.
  • While recent studies highlight the threat of prompt injections embedded in these skills, existing evaluations often assume settings where the malicious skill is already selected for execution.
  • We show that this assumption can substantially overestimate attack success.
  • We evaluate skill injection attacks under router-managed multi-skill settings by extending the benchmark introduced by SkillRouter with eight malicious payload categories.

Sources (1)

  • [1]Surviving the Router: Optimizing Skill Injections for Retrieval and Execution
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 6, 10:28 AM
    To address this limitation, we introduce CORSA (Cluster Optimization for Router-Aware Skill Attacks), a router-aware attack that optimizes skill injections for both retrieval and execution across clusters of related tasks.
    AI agents increasingly rely on modular third-party "skills" that are dynamically selected by skill routers to execute complex tasks.

Extractive summary: sentences quoted from the sources.

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