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critical·Product Based Web Vulnerabilities·Updated Nov 11, 2025

Flowise < 3.0.1 - Remote Command Execution

Est. Time~10 seconds
Scan TypeGroup Scan
Targetsdomain, subdomain, ipv4
CostFree
3.6k
Times Used
continuous scan runs
0
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2025-8943
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.

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.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
AFFECTED< 3.0.1SAFE ✓≥ 3.0.1
Updated Sep 9, 2026View on NVD →

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Flowise < 3.0.1 - Remote Command Execution CVE-2025-8943 Scanner | S4E