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CVE-2026-69255

📛 CVE Title

Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified

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.

Overview

State
PUBLISHED
Assigner (CNA)
GitHub_M
CVSS severity
CRITICAL
CVSS score
CVSS 9.2 / 10 9.2 9.2 / 10
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Effective score
9.2 / 10 CRITICAL source: CNA overview
CWE(s)
CWE-94
Reserved
2026-08-03
Published
2026-08-04 15:39 UTC
Last updated
2026-08-04 19:52 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/69xxx/CVE-2026-69255.json
Linked Threat
CVE-2026-69255 — Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified

Affected products (1)

VendorProductVersionsPlatforms
FlowiseAI Flowise < 3.1.3 (affected)

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-69255.json.

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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-04T19:30:56.973025Z",
                "version": "2.0.3"
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        "title": "CISA ADP Vulnrichment"
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            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
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      "title": "Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection \u2014 Root Shell Verified"
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