FlowiseAI Flowise up to 3.1.2 JavaScript Code Execution utils.ts executeJavaScriptCode nodeVMOptions command injection

Summaryinfo

A vulnerability marked as very critical has been reported in FlowiseAI Flowise up to 3.1.2. This issue affects the function executeJavaScriptCode of the file packages/components/src/utils.ts of the component JavaScript Code Execution. Performing a manipulation of the argument nodeVMOptions results in command injection. This vulnerability is identified as CVE-2026-69254. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in FlowiseAI Flowise up to 3.1.2. This affects the function executeJavaScriptCode of the file packages/components/src/utils.ts of the component JavaScript Code Execution. The manipulation of the argument nodeVMOptions with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching packages/server/src/routes/node-custom-functions/index.ts could run a custom function that imported flowise-components/dist/src/utils.js, called executeJavaScriptCode() again with nodeVMOptions.require.builtin set to allow all built-in modules, and then required child_process to execute arbitrary system commands as root on the Flowise server. This issue is fixed in version 3.1.3.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-69254 since 08/03/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/04/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 3.1.3 eliminates this vulnerability.

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Productinfo

Vendor

• FlowiseAI

Name

• Flowise

Version

• 3.1.0
• 3.1.1
• 3.1.2

Website

• Product: https://github.com/FlowiseAI/Flowise/

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