CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.8. Its EPSS score suggests a 72.3% probability of exploitation in the next 30 days.
CVE
CVE-2025-8943
Severity
CRITICAL
CVSS
9.8
EPSS
72.31%
Original NVD Description
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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)