Forensic Summary

Stash is an open-source persistent memory layer for AI agents using PostgreSQL and pgvector, exposing a broad MCP tool surface (28 tools) that introduces significant attack vectors including memory poisoning, sensitive data leakage, and cross-namespace contamination. While marketed as a productivity enhancement, the architecture centralises long-term agent memory in a shared backend, creating a high-value target for adversarial manipulation. Security teams deploying autonomous agents should treat persistent memory stores as critical infrastructure requiring strict access controls and integrity validation.

Read the full technical deep-dive on Grid the Grey: https://gridthegrey.com/posts/open-source-memory-layer-so-any-ai-agent-can-do-what-claude-ai-and-chatgpt-do/