React

github.comreact/CHANGELOG.md at main · react/reactThe library for web and native user interfaces. Contribute to react/react development by creating an account on GitHub.

Thanks to everyone who made this release possible! For a full list of changes, see the changelog: github.com/react/react/...

react.devReact 19.3 – ReactThe library for web and native user interfaces

React 19.3 is now available! This release makes View Transitions and Fragment Refs stable, and adds browser(), Trusted Types support, and Context in Server Components. react.dev/blog/2026/09...

react.dev<ViewTransition> – ReactThe library for web and native user interfaces

<ViewTransition> is now stable. It can animate UI as it enters, exits, or updates. Transitions, Suspense reveals, and deferred updates can trigger the animation. react.dev/reference/re...

react.dev<Fragment> (<>...</>) – ReactThe library for web and native user interfaces

Fragment Refs are now stable. Pass a ref to <Fragment> to work with its DOM children as a group, without adding a wrapper element. FragmentInstance includes APIs for events, focus, observers, measurement, and scrolling. react.dev/reference/re...

24 Feb

The React Foundation has officially launched, hosted by the Linux Foundation. Read more here: react.dev/blog/2026/02...

react.devDenial of Service and Source Code Exposure in React Server Components – ReactThe library for web and native user interfaces

11 Dec 2025

Researchers have found two new vulnerabilities in React Server Components while attempting to exploit the patches last week. These are new issues, separate from the critical CVE last week. The patch for React2Shell remains effective for the Remote Code Execution exploit.

These issues are present in the patches published last week for React2Shell. Even though they do not allow for Remote Code Execution they are high severity and you should update (again) immediately. react.dev/blog/2025/12...

12 Dec 2025

We found that the fix to address the DoS vulnerability in React Server Components (CVE-2025-55184) was incomplete and does not prevent an attack in a specific case. This is disclosed as CVE-2025-67779. New patches are available now, please update immediately.

It’s common for critical CVEs to uncover follow‑up vulnerabilities. When a critical vulnerability is disclosed, researchers scrutinize adjacent code paths looking for variant exploit techniques to test whether the initial mitigation can be bypassed.

react.devDenial of Service and Source Code Exposure in React Server Components – ReactThe library for web and native user interfaces

11 Dec 2025

This pattern shows up across the industry, not just in JavaScript. For example, after Log4Shell, additional CVEs were reported as the community examined the original fix. Additional disclosures can be frustrating, but they are generally a sign of a healthy response cycle.

We disclosed two new RSC vulnerabilities: - Denial of Service (High): CVE-2025-55184 - Source Code Exposure (Medium): CVE-2025-55183 Patches are available now, please update immediately. react.dev/blog/2025/12...

React reposted

react.devCritical Security Vulnerability in React Server Components – ReactThe library for web and native user interfaces

3 Dec 2025

There is critical vulnerability in React Server Components disclosed as CVE-2025-55182 that impacts React 19 and frameworks that use it. A fix has been published in React versions 19.0.1, 19.1.2, and 19.2.1. We recommend upgrading immediately. react.dev/blog/2025/12...

react.devCritical Security Vulnerability in React Server Components – ReactThe library for web and native user interfaces

3 Dec 2025

react.devReact Conf 2025 Recap – ReactThe library for web and native user interfaces

16 Oct 2025

React Conf 2025 is a wrap! Check out the recap: react.dev/blog/2025/10...

8 Oct 2025

React Conf Day 2 is starting now!

youtube.comReact Conf 2025 Day 2YouTube video by React Conf

8 Oct 2025

Watch the livestream at conf.react.dev or YouTube www.youtube.com/watch?v=p9Oc...

discord.ggJoin the React Conf 2025 Discord Server!Offical React Conf 2025 Discord Server | 1028 members

8 Oct 2025

Join the Discord to chat with fellow attendees and submit your questions for speakers to answer on the livestream: discord.gg/reactconf

Introducing the React Foundation

react.devIntroducing the React Foundation – ReactThe library for web and native user interfaces

Read more here: react.dev/blog/2025/10...

React Conf is starting now!

youtube.comReact Conf 2025 Day 1YouTube video by React Conf

Watch the livestream at conf.react.dev or YouTube www.youtube.com/watch?v=zyVR...

discord.ggJoin the React Conf 2025 Discord Server!Offical React Conf 2025 Discord Server | 628 members

Join the Discord to chat with fellow attendees and submit your questions for speakers to answer on the livestream: discord.gg/reactconf

We are excited to announce @infinite.red, Old Mission, @arcjet.com, and @renderatl.com as React Conf silver sponsors this year!

mux.comVideo API for developers | MuxMux helps teams ship high-performance and cost-effective video in minutes, not months. Build better video into anything from websites to platforms to AI workflows.

We are excited to announce @mux.com as the React Conf livestream sponsor this year! Learn about how to build better video into websites, platforms, AI workflows, and more here: www.mux.com

rwsdk.comRedwoodSDK | The React Framework for CloudflareRedwoodSDK is a React Framework for Cloudflare. It begins as a Vite plugin that unlocks SSR, React Server Components, Server Functions, and realtime features. Its standards-based router, with support...

We are excited to announce @redwoodjs.com as a React Conf Gold sponsor this year! Learn more about the React framework for Cloudflare here: rwsdk.com

We're excited to announce Gio Laquidara and Eric Fahsl as React Conf speakers! They'll be sharing how to use React and React Native to build for Amazon’s new Vega OS

React Conf starts tomorrow!

youtube.comReact Conf 2025 Day 1YouTube video by React Conf

Watch the livestream at conf.react.dev or YouTube www.youtube.com/watch?v=zyVR...

discord.ggJoin the React Conf 2025 Discord Server!Offical React Conf 2025 Discord Server | 367 members

Join the Discord to chat with fellow attendees and submit your questions for speakers to answer on the livestream: discord.gg/reactconf

mui.comMUI: The React component library you always wantedMUI provides a simple, customizable, and accessible library of React components. Follow your own design system, or start with Material Design.

4 Oct 2025

We are excited to announce MUI as a React Conf Gold sponsor this year! Learn more about MUI’s suite of free UI tools here: mui.com

4 Oct 2025

Check out @dudak.me’s talk on how to craft great UX

ag-grid.comAG Grid: High-Performance React Grid, Angular Grid, JavaScript GridAG Grid is a feature-rich Data Grid for all major JavaScript frameworks, offering filtering, grouping, pivoting, and more. Free and open-source. Upgrade to Enterprise for advanced features.

We are excited to announce @ag-grid.bsky.social as a React Conf Gold sponsor this year! Learn how to add Data Grids to your application here: www.ag-grid.com

Check out James Swinton-Bland's talk to learn how to build an MCP Server for a React Component

expo.devExpoExpo is an open-source platform for making universal native apps for Android, iOS, and the web with JavaScript and React.

We are excited to announce @expo.dev as a React Conf Gold sponsor this year! Expo is everything you need to build and distribute apps that run across android, iOS and web: expo.dev

We are thrilled to announce @chantastic.bsky.social as React Conf 2025’s emcee!

We are excited to announce @redwoodjs.com as a React Conf Gold sponsor this year! Learn more about the React framework for Cloudflare here: rwsdk.com

revenuecat.comIn-App Subscriptions Made Easy – RevenueCatThe world’s best apps use RevenueCat to power in-app purchases, manage customer data, and grow revenue across iOS, Android, and the web.

2 Oct 2025

We are excited to announce @revenuecat.com as a React Conf Gold sponsor this year! Learn how to build and grow your subscription business here: www.revenuecat.com

2 Oct 2025

Check out @lahteenlahti.com’s talk on how to add monetization to your React Native app