---
title: "GHSA-9qr9-h5gf-34mp: Next.js is vulnerable to RCE in React flight protocol"
url: https://erroneo.us/security/ghsa/GHSA-9qr9-h5gf-34mp/
description: "GHSA-9qr9-h5gf-34mp (critical, npm): Next.js is vulnerable to RCE in React flight protocol. A vulnerability affects certain React packages 1 for versions…"
type: advisory
section: "Security Digest"
date_published: 2025-12-03
date_modified: 2025-12-11
publisher: erroneo.us
author: erroneo.us Security Desk
ghsa: "GHSA-9qr9-h5gf-34mp"
license: All rights reserved. Quote with attribution and a link.
---

# GHSA-9qr9-h5gf-34mp: Next.js is vulnerable to RCE in React flight protocol

## Affected packages

- npm `next` >= 14.3.0-canary.77, < 15.0.5 → fixed: 15.0.5
- npm `next` >= 15.2.0-canary.0, < 15.2.6 → fixed: 15.2.6
- npm `next` >= 15.3.0-canary.0, < 15.3.6 → fixed: 15.3.6
- npm `next` >= 15.4.0-canary.0, < 15.4.8 → fixed: 15.4.8
- npm `next` >= 16.0.0-canary.0, < 16.0.7 → fixed: 16.0.7
- npm `next` >= 15.1.0-canary.0, < 15.1.9 → fixed: 15.1.9
- npm `next` >= 15.5.0-canary.0, < 15.5.7 → fixed: 15.5.7

## Details

A vulnerability affects certain React packages 1 for versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 and frameworks that use the affected packages, including Next.js 15.x and 16.x using the App Router. The issue is tracked upstream as CVE-2025-55182. Fixed in: React: 19.0.1, 19.1.2, 19.2.1 Next.js: 15.0.5, 15.1.9, 15.2.6, 15.3.6, 15.4.8, 15.5.7, 16.0.7, 15.6.0-canary.58, 16.1.0-canary.12+ The vulnerability also affects experimental canary releases starting with 14.3.0-canary.77. Users on any of the 14.3 canary builds should either downgrade to a 14.x stable release or 14.3.0-canary.76. All users of stable 15.x or 16.x Next.js versions should upgrade to a patched, stable version immediately. 1 The affected React packages are: - react-server-dom-parcel - react-server-dom-turbopack - react-server-dom-webpack

## Sources

- [GitHub Advisory GHSA-9qr9-h5gf-34mp](https://github.com/advisories/GHSA-9qr9-h5gf-34mp)
- [github.com](https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp)
- [nvd.nist.gov](https://nvd.nist.gov/vuln/detail/CVE-2025-55182)
- [github.com](https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r)
- [github.com](https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-fmh4-wr37-44fp)

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Source page: https://erroneo.us/security/ghsa/GHSA-9qr9-h5gf-34mp/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt