{"cvss":9.2,"datePublished":"2026-09-15T00:00:00Z","dateUpdated":"2026-09-15T00:00:00Z","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as base64_string = \"${base64String}\" before calling Pyodide. The validatePythonCodeForDataFrame() denylist only checked later LLM-generated code and did not validate this initial code block. An authenticated attacker could inject a closing quote followed by Python code, use Pyodide's js bridge to load Node.js child_process, and execute arbitrary operating system commands as root in the Flowise container. This issue is fixed in version 3.1.3.","dueDate":"","id":"CVE-2026-69255","kev_catalogs":["vulncheck"],"knownRansomwareCampaignUse":"Unknown","product":"Flowise","requiredAction":"Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.","severity":"CRITICAL","source":"vulncheck_kev","title":"FlowiseAI Flowise Improper Control of Generation of Code","vendor":"FlowiseAI"}