Securing LangGraph Multi-Agent Workflows Against Memory Poisoning (ASI06)
LangGraph has become the de facto standard for building complex, multi-agent workflows. Its core abstraction—the state graph—allows developers to build cyclic, stateful applications where agents can pause, resume, and pass context to one another.
But this shared state introduces a critical security vulnerability: Memory Poisoning (ASI06).
When multiple agents read from and write to the same LangGraph checkpointer (e.g., MemorySaver, SqliteSaver, or PostgresSaver), a malicious payload injected by one agent can persist and silently compromise the behavior of all other agents in the graph.
In this article, we'll explore how ASI06 manifests in LangGraph and how to mitigate it using the OWASP Agent Memory Guard reference implementation.
