CVE-2026-69255 (GCVE-0-2026-69255)

Vulnerability from cvelistv5 – Published: 2026-08-04 15:39 – Updated: 2026-08-04 19:52
VLAI Previdian
Title
Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
Summary
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.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 19:30 UTC
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8083 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
FlowiseAI Flowise Affected: < 3.1.3
guessed Create a notification for this product.
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2026-69255

Status: Confirmed

Status Updated: 2026-09-15 19:57 UTC

Exploited: Yes


Timestamps
First Seen: 2026-09-15
Asserted: 2026-09-15

Scope
Notes: Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified | Affected: FlowiseAI / Flowise | CVSS: 9.2 (CRITICAL) | EPSS: 0.00602 | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
Cve Id CVE-2026-69255
Vendor FlowiseAI
Ghsa Id None
Product Flowise
Added Date 2026-09-15T19:57:31.772Z
Cvss Score 9.2
Epss Score 0.00602
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.47039
Used In Malware unknown
Vulnerability Id CVE-2026-69255
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True

References

Created: 2026-09-16 20:00 UTC | Updated: 2026-09-16 20:00 UTC
Show details on NVD website

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