{"id":"CVE-2026-58057","state":"PUBLISHED","title":"Flowise - Custom MCP Environment Variable Denylist Bypass via Case Sensitivity","description":"Flowise before 3.1.3 validates Custom MCP stdio environment variables against a denylist using a case-sensitive comparison, so on Windows, where environment names are case-insensitive, supplying 'node_options' bypasses the NODE_OPTIONS denylist entry. 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