CVE-2026-73601 Flowise before 3.1.3 Remote Code Execution via Custom MCP

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOMMCPPROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and...

CVE-2026-73601

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOMMCPPROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and...

CVE-2026-73601

Flowise

PT-2026-71429

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOM MCP PROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS a...

CVE-2026-73601: Improper Neutralization of Directives in Dynamically Evaluated Code

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOMMCPPROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and...

📄 Flowise 3.1.3 Arbitrary Code Execution

Flowise version 3.1.3 suffers from an arbitrary code execution vulnerability. On Windows, the Custom MCP stdio environment variable validation uses case-sensitive comparison. Supplying "nodeoptions" bypasses the NODEOPTIONS denylist and allows arbitrary code execution via --require. Exploit Title...

CVE-2026-58057

Flowise before 3.1.3 is affected: a case-sensitive denylist for Custom MCP stdio environment variables allows bypass on Windows (case-insensitive env names). An authenticated user who can configure a Custom MCP node can inject NODE_OPTIONS --require to execute arbitrary code in the Flowise server...

CVE-2026-39417

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

CVE-2026-39417

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

CVE-2026-39417 MaxKB: RCE via MCP stdio command injection in workflow engine

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

EUVD-2026-22162

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

CVE-2026-39417 MaxKB: RCE via MCP stdio command injection in workflow engine

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

CVE-2026-39417

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

MaxKB Operating System Command Injection Vulnerability

MaxKB is an open-source question-answering system based on large language models and RAG, developed by 1Panel-dev. Versions of MaxKB prior to 2.7.1 contained a vulnerability related to operating system command injection. This vulnerability stemmed from issues with the MCP node, a workflow engine,...

CVE-2026-39417: Improper Neutralization of Special Elements used in an OS Command

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

PT-2026-32564

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

CVE-2026-6108

1Panel-dev MaxKB up to 2.6.1 is affected in the Model Context Protocol Node, specifically the execute function in apps/application/flow/step_node/mcp_node/impl/base_mcp_node.py. The vulnerability allows remote OS command injection via manipulation of the node, with exploitation described as publi...

CVE-2026-6108

A vulnerability was found in 1Panel-dev MaxKB up to 2.6.1. The affected element is the function execute of the file apps/application/flow/stepnode/mcpnode/impl/basemcpnode.py of the component Model Context Protocol Node. Performing a manipulation results in os command injection. The attack is...

CVE-2026-6108 1Panel-dev MaxKB Model Context Protocol Node base_mcp_node.py execute os command injection

A vulnerability was found in 1Panel-dev MaxKB up to 2.6.1. The affected element is the function execute of the file apps/application/flow/stepnode/mcpnode/impl/basemcpnode.py of the component Model Context Protocol Node. Performing a manipulation results in os command injection. The attack is...

CVE-2026-6108 1Panel-dev MaxKB Model Context Protocol Node base_mcp_node.py execute os command injection

A vulnerability was found in 1Panel-dev MaxKB up to 2.6.1. The affected element is the function execute of the file apps/application/flow/stepnode/mcpnode/impl/basemcpnode.py of the component Model Context Protocol Node. Performing a manipulation results in os command injection. The attack is...