react 19 vulnerability github - Brave Search

github.com › facebook › react › security › advisories › GHSA-fv66-9v8q-g76r

Critical Security Vulnerability in React Server Components

December 3, 2025 - ### Impact There is an unauthenticated remote code execution vulnerability in React Server Components. We recommend upgrading immediately. The vulnerability is present in versions 19.0, 19...

medium.com › @jitendrakhilar609 › react-19-vulnerability-explained-8333eeee1961

React 19 Vulnerability Explained. Recently, a critical security… | by Jitendra Khilar | Medium

December 7, 2025 - Link 2 — https://github.com/... for all software and hardware, not just React. In short: React 19 RSC protocol could be hacked to execute commands....

Discussions

React 19 RCE vulnerability - can we stop pretending modern frameworks are automatically more secure?

Sir, this is a Wendy’s. More on reddit.com

r/reactjs

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0

January 27, 2026

Critical Vulnerabilities in React and Next.js: everything you need to know - A critical vulnerability has been identified in the React Server Components (RSC) "Flight" protocol, affecting the React 19 ecosystem and frameworks that implement it, most notably Next.js

Feels like having all the behind the scenes magic and hidden endpoints isn't the best approach to build robust solutions. Devs should define all open endpoints and expose them as part of routing configuration. More on reddit.com

r/reactjs

82

236

December 3, 2025

What is the newly disclosed React Server Components vulnerability (CVE-2025-55182)? How serious is it for Next.js apps?

There’s a vulnerability that would allow an attacker to run malicious code against server based components. Update to the appropriate specified version asap. They are intentionally not disclosing details. Just upgrade to the latest version and you’ll be fine. More on reddit.com

r/reactjs

49

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December 4, 2025

Critical Security Vulnerability in React Server Components

Expo is not affected since nothing is server side rendered. The vulnerability here is that someone can execute code on your server to, for example, extract the whole database. Native apps on a phone are client side apps, anything shipped in an application should be considered public. Same applies to expo-web, which run client side in a browser. More on reddit.com

r/expo

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December 5, 2025

Videos

Security Advisory: React2Shell (CVE-2025-55182) - Critical RCE ...

December 12, 2025

React.js shell shocked by 10.0 critical vulnerability… - YouTube

December 9, 2025

React’s Worst Vulnerability Ever (RCE Exploit Explained) - YouTube

December 8, 2025

React HACKED - Initial review and incident summary - YouTube

December 6, 2025

Next.js & React vulnerability will break the internet - YouTube

December 5, 2025

React Got Hacked Again (this is bad) - YouTube

December 12, 2025

github.com › facebook › react › security › advisories › GHSA-83fc-fqcc-2hmg

Denial of Service Vulnerabilities in React Server Components

January 26, 2026 - 19.0.0, 19.0.1, 19.0.2, 19.0.3, ... React Server Components were incomplete and we found multiple denial of service vulnerabilities still exist in React Server Components....

github.com › facebook › react › security › advisories › GHSA-7gmr-mq3h-m5h9

Denial of Service Vulnerability in React Server Components

December 11, 2025 - It was found that the fix to address CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. We recommend updating immediately. The vulnerability exists in versions 19.0.2, 19.1.3, and 19.2.2 of:

github.com › AdityaBhatt3010 › React2Shell-CVE-2025-55182-The-Deserialization-Bug-That-Broke-the-Web › tree › main

GitHub - AdityaBhatt3010/React2Shell-CVE-2025-55182-The-Deserialization-Bug-That-Broke-the-Web: React2Shell, CVE-2025-55182, RCE Vulnerability: A critical breakdown of the unsafe deserialization flaw in React Server Components that enables unauthenticated remote code execution across default React/Next.js setups. · GitHub

React2Shell (CVE-2025-55182) is a critical Remote Code Execution (RCE) vulnerability affecting React Server Components (RSC) in React 19.x and frameworks like Next.js.

Author AdityaBhatt3010

github.com › advisories › GHSA-fv66-9v8q-g76r

React Server Components are Vulnerable to RCE · CVE-2025-55182 · GitHub Advisory Database · GitHub

December 3, 2025 - There is an unauthenticated remote code execution vulnerability in React Server Components. We recommend upgrading immediately. The vulnerability is present in versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 of:

react.dev › blog › 2025 › 12 › 03 › critical-security-vulnerability-in-react-server-components

Critical Security Vulnerability in React Server Components – React

A fix was introduced in versions 19.0.1, 19.1.2, and 19.2.1. If you are using any of the above packages please upgrade to any of the fixed versions immediately. If your app’s React code does not use a server, your app is not affected by this vulnerability.

github.com › vercel › next.js › security › advisories › GHSA-9qr9-h5gf-34mp

RCE in React Server Components · Advisory · vercel/next.js

A vulnerability affects certain React packages1 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.

Find elsewhere

Google Bing Mojeek

ox.security › blog › react-cve-2025-55184-67779-55183-react-19-vulnerabilities

React Vulnerabilities Strike Again: Denial Of Service & Information Leakage in Patched Versions of React2Shell - OX Security

December 12, 2025 - New React vulnerabilities (CVE-2025-55184, CVE-2025-67779, CVE-2025-55183) affect React 19.0.0–19.2.2, including patched React2Shell versions. Learn the impact and how to fix it fast.

github.com › dwisiswant0 › CVE-2025-55182

GitHub - dwisiswant0/CVE-2025-55182: Pre-auth RCE in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0. · GitHub

Pre-auth RCE in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0. - dwisiswant0/CVE-2025-55182

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Forked by 15 users

Languages JavaScript 96.4% | Dockerfile 3.6%

github.com › advisories › GHSA-9qr9-h5gf-34mp

Next.js is vulnerable to RCE in React flight protocol · GHSA-9qr9-h5gf-34mp · GitHub Advisory Database · GitHub

December 3, 2025 - A vulnerability affects certain React packages1 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.

reddit.com › r/reactjs › react 19 rce vulnerability - can we stop pretending modern frameworks are automatically more secure?

r/reactjs on Reddit: React 19 RCE vulnerability - can we stop pretending modern frameworks are automatically more secure?

January 27, 2026 -

The React 19 RCE bug from December (CVE-2025-66478) is a good reminder that no framework is magically secure.

I keep seeing people say WordPress is insecure and moving to Next/React solves security problems. But like... React Server Components just had a critical remote code execution vulnerability. WordPress core is actually pretty solid, most security issues are from old plugins or bad hosting.

Security comes from keeping stuff updated, decent infrastructure, not installing random plugins/packages, and actually knowing what you're deploying. That's it.

The "WordPress bad, modern frameworks secure" thing is getting old when they all have vulnerabilities.

Curious if anyone else has clients who think switching stacks = better security? That conversation is always fun.

Sir, this is a Wendy’s.

Frustratingly, if I understand the vulnerability, it should have been solved by something approaching a common ESLint rule about using `hasOwnProperty()` or `Object.hasOwn()` when building their custom stream token handler? Or using `Object.create(null)` for the storage object. Basically, critical functionality didn't cover common prototype vulnerabilities, likely because people just don't know them anymore.

reddit.com › r/reactjs › critical vulnerabilities in react and next.js: everything you need to know - a critical vulnerability has been identified in the react server components (rsc) "flight" protocol, affecting the react 19 ecosystem and frameworks that implement it, most notably next.js

r/reactjs on Reddit: Critical Vulnerabilities in React and Next.js: everything you need to know - A critical vulnerability has been identified in the React Server Components (RSC) "Flight" protocol, affecting the React 19 ecosystem and frameworks that implement it, most notably Next.js

December 3, 2025 - They said Next.js: 15.0.5+ is patched, ... Vite users are not safe. The vulnerability exists in the React Flight implementation (the wire protocol for RSCs) that is shared across all RSC implementations....

Palo Alto Networks

unit42.paloaltonetworks.com › cve-2025-55182-react-and-cve-2025-66478-next

Exploitation of Critical Vulnerability in React Server Components (Updated December 12)

December 12, 2025 - We observed attackers installing an interactive web shell disguised as a React File Manager (fm.js) retrieved directly from GitHub.

vercel.com › changelog › cve-2025-55182

Summary of CVE-2025-55182 - Vercel – Vercel

react-server-dom-turbopack (19.0.0, 19.1.0, 19.1.1, and 19.2.0) These packages are included in the following frameworks and bundlers: Next.js with versions ≥14.3.0-canary.77, ≥15 and ≥16 · Other frameworks and plugins that embed or depend on React Server Components implementation (e.g., Vite, Parcel, React Router, RedwoodSDK, Waku) After creating mitigations to address this vulnerability, we deployed them across our globally-distributed platform to quickly protect our customers.

github.com › dr4xp › react2shell

GitHub - dr4xp/react2shell: A critical vulnerability in React Server Components affecting React 19 (CVE-2025-55182) and frameworks that use it like Next.js (CVE-2025-66478). · GitHub

A critical vulnerability in React Server Components affecting React 19 (CVE-2025-55182) and frameworks that use it like Next.js (CVE-2025-66478). - GitHub - dr4xp/react2shell: A critical vulnerability in React Server Components affecting React ...

Author dr4xp

react.dev › blog › 2025 › 12 › 11 › denial-of-service-and-source-code-exposure-in-react-server-components

Denial of Service and Source Code Exposure in React Server Components – React

This left previous versions vulnerable. Versions 19.0.4, 19.1.5, 19.2.4 are safe.

wiz.io › blog › critical-vulnerability-in-react-cve-2025-55182

React2Shell (CVE-2025-55182): Critical React Vulnerability | Wiz Blog

December 3, 2025 - A critical vulnerability has been ... it, most notably Next.js. Assigned CVE-2025-55182, this flaw allows for unauthenticated remote code execution (RCE) on the server due to insecure deserialization....

cloud.google.com › blog › products › identity-security › responding-to-cve-2025-55182

Responding to CVE-2025-55182 | Google Cloud Blog

December 4, 2025 - Vulnerable versions: React 19.0, 19.1.0, 19.1.1, and 19.2.0 · Patched in React 19.2.1 · Fix: https://github.com/facebook/react/commit/7dc903cd29dac55efb4424853fd0442fef3a8700 · Announcement: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components ·

microsoft.com › home › defending against the cve-2025-55182 (react2shell) vulnerability in react server components

Defending against the CVE-2025-55182 (React2Shell) vulnerability in React Server Components | Microsoft Security Blog

December 15, 2025 - When a client requests data, the ... component tree. The vulnerability exists because affected React Server Components versions fail to validate incoming payloads....