GHSA-6933-JPX5-Q87Q Flowise has unsandboxed remote code execution via Custom MCP

Summary 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, the default installation of...

CVE-2025-8943 Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers

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...

CVE-2025-8943 Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers

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...

PT-2025-33147

Name of the Vulnerable Software and Affected Versions: Flowise versions prior to 3.0.1 Description: Flowise, a software platform for building user interfaces over language models LLM, has a missing authentication check for a critical function. This allows remote, unauthenticated attackers to...

CVE-2025-8943: Missing Authentication for Critical Function

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...