Description
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.
Affected products
flowiseai: flowise
References5
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-x6vm-w76m… ExploitVendor Advisory
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-x6vm-w76m… ExploitVendor Advisory
- github.com/FlowiseAI/Flowise/commit/c79fe56a6c249850e96bce9b485… Patch
- github.com/FlowiseAI/Flowise/pull/6257 Issue TrackingPatch
- github.com/FlowiseAI/Flowise/releases/tag/[email protected] PatchRelease Notes
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
9.4
CRITICAL
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 64 · as of 13 November 2026
- CWE
- CWE-94
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