---
title: "CVE-2026-69254: Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override"
url: https://erroneo.us/security/cve/CVE-2026-69254/
description: "CVE-2026-69254 (flowise (npm)): Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-08-04
date_modified: 2026-08-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-69254"
kev: false
cvss: 9.4
epss: 0.00691
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-69254: Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.7% , percentile 52: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 52% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes flowise (npm) <= 3.1.2, fixed in 3.1.3 ; flowise-components (npm) <= 3.1.2, fixed in 3.1.3 . Check your lockfile, including transitive dependencies.

## What it 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 childprocess to execute arbitrary system commands as root on the Flowise server. This issue is fixed in version 3.1.3.

## Affected packages

- npm `flowise` <= 3.1.2 → fixed: 3.1.3
- npm `flowise-components` <= 3.1.2 → fixed: 3.1.3

## Affected products (CVE record)

- FlowiseAI Flowise: < 3.1.3

## Severity

- GitHub_M CVSS 4.0: 9.4 `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`
- GitHub CVSS 4.0: 9.4 `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`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.69% probability of exploitation activity in the next 30 days; percentile 52.

## Sources

- [GitHub Advisory GHSA-3769-jgqc-cxm7](https://github.com/advisories/GHSA-3769-jgqc-cxm7)
- [CVE.org record CVE-2026-69254](https://www.cve.org/CVERecord?id=CVE-2026-69254)
- [NVD entry CVE-2026-69254](https://nvd.nist.gov/vuln/detail/CVE-2026-69254)
- [github.com](https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3769-jgqc-cxm7)
- [github.com](https://github.com/FlowiseAI/Flowise/pull/6306)
- [github.com](https://github.com/FlowiseAI/Flowise/commit/3086cb7e323bb96c5a581d3232ef975b0d92183d)
- [github.com](https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3)

---
Source page: https://erroneo.us/security/cve/CVE-2026-69254/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt