Supply-Chain Poisoning Attacks Against LLM Coding Agent Skill Ecosystems
LLM-based coding agents extend their capabilities via third-party agent skills distributed through open marketplaces without mandatory security review. Unlike traditional packages, these skills are executed as operational directives with system-level privileges, so a single malicious skill can compromise the host. Prior work has not examined whether supply-chain attacks can directly hijack an agent's action space, such as file writes, shell commands, and network requests, despite existing safeguards. We introduce Document-Driven Implicit Payload Execution (DDIPE), which embeds malicious logic in code examples and configuration templates within skill documentation. Because agents reuse the...
| Authors | Yubin Qu, Yi Liu, Tongcheng Geng et al. |
|---|---|
| Primary category | cs.CR |
| Published | 3 April 2026 |
| Last updated at source | 3 April 2026 |
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