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CVE-2026-69255

CVE-2026-69255 · Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.2 · Critical · EPSS 0.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • flowise

    Versions
    • < 3.1.3: Affected

    No fix published

  • flowise npm

    Affected ranges
    • SEMVER: < 3.1.3

    Update to 3.1.3

  • flowise-components npm

    Affected ranges
    • SEMVER: < 3.1.3

    Update to 3.1.3

Original sources

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