CVE-2026-70477
Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, a prompt injection sent to a chatflow using a CSV Agent node can cause the LLM to respond with a malicious Python script that bypasses the blocklist validator and executes in an unsandboxed Pyodide environment. The specific flaw exists within the run method of the CSV_Agents class, where untrusted data is used to construct an LLM prompt and the resulting pythonCode is validated by validatePythonCodeForDataFrame before execution. An attacker can leverage this to execute arbitrary code in the context of the service account. This issue is fixed in 3.1.3.
INFO
Published Date :
Aug. 4, 2026, 8:16 p.m.
Last Modified :
Oct. 24, 2026, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Flowise to version 3.1.3 or later.
- Review and sanitize all user inputs.
- Validate Python code before execution.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-70477.
| URL | Resource |
|---|---|
| https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c | Patch |
| https://github.com/FlowiseAI/Flowise/pull/6499 | Issue Tracking Patch |
| https://github.com/FlowiseAI/Flowise/releases/tag/[email protected] | Release Notes |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr | Vendor Advisory |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-70477 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-70477
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-70477 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-70477 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: Flowise de FlowiseAI, Description: Flowise es una interfaz de usuario de arrastrar y soltar para construir un flujo de modelo de lenguaje grande personalizado. Antes de la 3.1.3, una inyección de prompt enviada a un chatflow utilizando un nodo de Agente CSV puede hacer que el LLM responda con un script Python malicioso que omite el validador de lista de bloqueo y se ejecuta en un entorno Pyodide sin sandbox. La falla específica existe dentro del método run de la clase CSV_Agents, donde se utilizan datos no confiables para construir un prompt del LLM y el pythonCode resultante es validado por validatePythonCodeForDataFrame antes de la ejecución. Un atacante puede aprovechar esto para ejecutar código arbitrario en el contexto de la cuenta de servicio. Este problema se soluciona en la 3.1.3. Title: Flowise de FlowiseAI, Description: Flowise es una interfaz de usuario de arrastrar y soltar para construir un flujo de modelo de lenguaje grande personalizado. Antes de la 3.1.3, una inyección de prompt enviada a un chatflow utilizando un nodo de Agente CSV puede hacer que el LLM responda con un script Python malicioso que omite el validador de lista de bloqueo y se ejecuta en un entorno Pyodide sin sandbox. La falla específica existe dentro del método run de la clase CSV_Agents, donde se utilizan datos no confiables para construir un prompt del LLM y el pythonCode resultante es validado por validatePythonCodeForDataFrame antes de la ejecución. Un atacante puede aprovechar esto para ejecutar código arbitrario en el contexto de la cuenta de servicio. Este problema se soluciona en la 3.1.3. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: Flowise de FlowiseAI, Description: Flowise es una interfaz de usuario de arrastrar y soltar para construir un flujo de modelo de lenguaje grande personalizado. Antes de la 3.1.3, una inyección de prompt enviada a un chatflow utilizando un nodo de Agente CSV puede hacer que el LLM responda con un script Python malicioso que omite el validador de lista de bloqueo y se ejecuta en un entorno Pyodide sin sandbox. La falla específica existe dentro del método run de la clase CSV_Agents, donde se utilizan datos no confiables para construir un prompt del LLM y el pythonCode resultante es validado por validatePythonCodeForDataFrame antes de la ejecución. Un atacante puede aprovechar esto para ejecutar código arbitrario en el contexto de la cuenta de servicio. Este problema se soluciona en la 3.1.3. -
Initial Analysis by [email protected]
Sep. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.3 Added Reference Type GitHub, Inc.: https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c Types: Patch Added Reference Type GitHub, Inc.: https://github.com/FlowiseAI/Flowise/pull/6499 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/FlowiseAI/Flowise/releases/tag/[email protected] Types: Release Notes Added Reference Type CISA-ADP: https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr Types: Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 05, 2026
Action Type Old Value New Value Added Reference https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr Added SSVC {'id': 'CVE-2026-70477', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-05T13:51:06.061832Z'} -
New CVE Received by [email protected]
Aug. 04, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'FlowiseAI', 'product': 'Flowise', 'versions': [{'status': 'affected', 'version': '< 3.1.2'}]}] Added Description Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, a prompt injection sent to a chatflow using a CSV Agent node can cause the LLM to respond with a malicious Python script that bypasses the blocklist validator and executes in an unsandboxed Pyodide environment. The specific flaw exists within the run method of the CSV_Agents class, where untrusted data is used to construct an LLM prompt and the resulting pythonCode is validated by validatePythonCodeForDataFrame before execution. An attacker can leverage this to execute arbitrary code in the context of the service account. This issue is fixed in 3.1.3. Added CVSS V4.0 AV:N/AC:H/AT:P/PR:N/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 Added CWE CWE-94 Added Reference https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c Added Reference https://github.com/FlowiseAI/Flowise/pull/6499 Added Reference https://github.com/FlowiseAI/Flowise/releases/tag/[email protected] Added Reference https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr