CVE-2026-73486

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to execute code in the unsandboxed pyodide environment with full system access.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4878-cqgq-j53v	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/flowise-before-code-injection-via-csv-agent-customreadcsv	Third Party Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4878-cqgq-j53v	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

23 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Flowise antes de 3.1.3 contiene una vulnerabilidad de inyección de código en el parámetro customReadCSV del nodo CSV Agent que permite a atacantes autenticados ejecutar código Python arbitrario. El validador utiliza una lista negra de expresiones regulares estática que puede ser eludida mediante técnicas de ofuscación, permitiendo a los atacantes ejecutar código en el entorno pyodide sin sandbox con acceso total al sistema.

Information

Published : 2026-08-13 12:17

Updated : 2026-10-24 15:10

NVD link : CVE-2026-73486

Mitre link : CVE-2026-73486

CVE.ORG link : CVE-2026-73486

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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