CVE-2026-69255Public exploitNetwork attack vectorHinoki check available

Authenticated command execution via CSVAgent Python interpolation

Published Aug 4, 2026 · Updated Aug 4, 2026

Code injection in Flowise before 3.1.3 allows remote authenticated users to execute operating system commands through a crafted CSV Agent file. CSVAgent.ts takes the final comma-delimited segment of attacker-controlled file data and inserts it unescaped inside a quoted Python assignment passed to Pyodide. A valid account and a crafted CSV Agent workflow are required; breaking out of the Python string reaches Node.js child_process and grants root command execution in the container.

CVSS severity9.2
Critical
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code injection in Flowise before 3.1.3 allows remote authenticated users to execute operating system commands through a crafted CSV Agent file. CSVAgent.ts takes the final comma-delimited segment of attacker-controlled file data and inserts it unescaped inside a quoted Python assignment passed to Pyodide. A valid account and a crafted CSV Agent workflow are required; breaking out of the Python string reaches Node.js child_process and grants root command execution in the container.

The record

CVE
CVE-2026-69255
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-94, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=< 3.1.3

Published CVSS scores

9.2GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.9FlowiseAI advisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.006Python

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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