Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-69255

CVE-2026-69255CRITICAL

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

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   N   N   H   H   H    9.2   .0072   52.1     —

AFFECTED
  Product  Versions   Fixed
  Flowise  < 3.1.3 –  —

TIMELINE
  Aug 3   Reserved by GitHub_M
  Aug 4   Published (CNA: GitHub_M)
  Sep 14  EXPLOIT PUBLISHED — CVE-2026-69255 (FlowiseAI Flowise). Public exploit reference added.

CWE-94 · CNA: GitHub_M · CVSS v4.0 · 4 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 3, 2026	Reserved	Reserved by GitHub_M
August 4, 2026	Published	Published (CNA: GitHub_M)
September 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-69255 (FlowiseAI Flowise). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
FlowiseAI	Flowise	—	< 3.1.3	—

Weaknesses

CWE-94

References (4)

https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c [Patch]
https://github.com/FlowiseAI/Flowise/pull/6499 [Issue Tracking, Patch]
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.3 [Patch, Release Notes]
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-vmv7-4m6c-3cg5 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-69255 at cve.org

Vendors: flowiseai

Weaknesses: CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-69255 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.