CVE-2026-73486 [HIGH] – Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node’s custo

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.