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Noma Labs · July 29, 2026

RufRoot: unauthenticated Ruflo MCP bridge enabled RCE and memory poisoning

analysis Agent SecurityAI Red TeamingAI Engineering
Why it matters

Before Ruflo 3.16.3, its default Docker Compose deployment bound the MCP bridge to all interfaces without authentication. A reachable attacker could invoke the terminal tool, read model-provider keys and conversations, spawn agents, and poison persistent AgentDB patterns. Noma Labs verified the chain; the patch adds loopback binding, bearer authentication for public exposure, an opt-in terminal tool, authenticated MongoDB, tighter CORS and container defaults, and regression tests.

My takeaway: Upgrade to Ruflo 3.16.3 or later and treat exposed instances as compromised: close ports 3001 and 27017, rotate provider secrets, inspect AgentDB and MongoDB, and rebuild from trusted images. For every MCP server, require authentication and per-tool authorization, keep dangerous tools off by default, restrict network reachability, audit memory writes, and regression-test secure deployment defaults.
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