CRITICAL 9.8
GHSA-2vv2-3x8x-4gv7
Flowise OS command remote code execution
Details
The Custom MCPs feature is designed to execute OS commands, for instance, using tools like `npx` to spin up local MCP Servers. However, Flowise's inherent authentication and authorization model is minimal and lacks role-based access controls (RBAC). Furthermore, in Flowise versions before 3.0.1 the default installation operates without authentication unless explicitly configured. This combination allows unauthenticated network attackers to execute unsandboxed OS commands.
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Affected packages
npm / flowise
Introduced in:
0 No fixed version published yet for flowise (npm). Pin to a known-safe version or switch to an alternative.