Vulnerabilities CVE-2026-73486

CVE-2026-73486

Critical

Open

TLP:CLEAR

Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV

NVD CVE.org

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Description

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.

Details

CVSS Score: 9.0
CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Confidence: 90%
Published: Aug 13, 2026
Last Modified: Aug 13, 2026

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