CVE-2026-69256

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent node allowed users to provide Python code that is executed through pyodide; although a denylist blocked dangerous Python constructs, pandas.read_pickle() could deserialize a pickled payload and achieve code execution without matching the denied words. The affected file is flowise-components/nodes/agents/CSVAgent/CSVAgent.ts, where user-supplied customReadCSVFunc is evaluated as pd.${customReadCSVFunc}. An authenticated user who can create or modify a chatflow can add a CSV Agent, place a malicious read_pickle payload in the Additional Parameters, save the chatflow, and trigger /api/v1/prediction/<UUID> to execute commands. This issue is fixed in version 3.1.3.

• CWE-94

• https://github.com/FlowiseAI/Flowise/commit/c79fe56a6c249850e96bce9b4859f7a0083e4507Patch
• https://github.com/FlowiseAI/Flowise/pull/6257Issue Tracking, Patch
• https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3Patch, Release Notes
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x6vm-w76m-8j7gExploit, Vendor Advisory
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x6vm-w76m-8j7gExploit, Vendor Advisory

Published

Aug 4, 2026

Last Modified

Sep 14, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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