# Duplicate Advisory: Flowise contains an unauthenticated sandbox escape

Source: https://junglewise.ai/threats/duplicate-advisory-flowise-contains-an-unauthenticated-sandbox-escape-8959e167  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-13  
License: CC BY 4.0 with a link back

Severity: high · CVSS 8.8 · Published 2026-08-13

# Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-9gvv-qjj3-2p6g. This link is maintained to preserve external references.

# Original Description

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the `vm2/@flowiseai/nodevm` JavaScript sandbox. An authenticated user with access to the `/api/v1/node-custom-function` endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's `file://` URL handling. In versions 3.0.8–3.1.2 exploitation requires `ALLOW_BUILTIN_DEP=true`; earlier versions are exploitable by default. Fixed in 3.1.3.

Technologies: [flowise (npm)](https://junglewise.ai/threats/technologies/flowise), [flowise-components (npm)](https://junglewise.ai/threats/technologies/flowise-components). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** High severity, with a CVSS score of 8.8, published 13 August 2026.

**Which products and versions are affected?** flowise (npm) <= 3.1.2; flowise-components (npm) <= 3.1.2.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected?** Check whether you run flowise (npm) or flowise-components (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- flowise (npm) <= 3.1.2
- flowise-components (npm) <= 3.1.2

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