Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-8943

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.8%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2025-8943


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