---
title: "CVE-2026-73483: Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium"
url: https://erroneo.us/security/cve/CVE-2026-73483/
description: "CVE-2026-73483 (flowise (npm)): Flowise (packages flowise and flowise-components) in versions"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-08-13
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-73483"
kev: false
cvss: 9.4
epss: 0.00621
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-73483: Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium

**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 0.6% , percentile 49: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 49% of all scored CVEs (low). 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 (packages flowise and flowise-components) in versions

## 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
- FlowiseAI Flowise: < 3.1.3

## Severity

- VulnCheck 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 yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.62% probability of exploitation activity in the next 30 days; percentile 49.

## Sources

- [GitHub Security Advisory (GHSA-9gvv-qjj3-2p6g)](https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g)
- [GitHub Advisory GHSA-9gvv-qjj3-2p6g](https://github.com/advisories/GHSA-9gvv-qjj3-2p6g)
- [CVE.org record CVE-2026-73483](https://www.cve.org/CVERecord?id=CVE-2026-73483)
- [NVD entry CVE-2026-73483](https://nvd.nist.gov/vuln/detail/CVE-2026-73483)
- [VulnCheck Advisory: Flowise before 3.1.3 Sandbox Escape via Puppeteer](https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer)

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Source page: https://erroneo.us/security/cve/CVE-2026-73483/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt