React

Verified

Developer Tools • USA

Official Site

The JavaScript library for building web and native user interfaces.

Tracked Changes

Pricing Shifts

Features & Launches

Last Verified Event

Sep 28, 2026

React Chronological Timeline

2026

product launchSep 28, 2026

97% Verified

React 19 Releases Actions, useActionState Hook, and Server Functions

React 19 officially introduced Actions for handling async form submissions, document metadata hoisting, and native asset preloading.

Before: Form mutations required manual useEffect/useState state tracking and manual error try/catch blocks.

After: Native <form action={...}> handling with automatic pending states, optimistic UI updates, and error boundaries.

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featureSep 9, 2026

96% Verified

React 19.3

React 19.3 introduces native support for View Transitions and Fragment Refs. It also adds browser() utility functions and support for Trusted Types.

Before: React Fragments could not accept refs, and developers had to manually implement View Transitions or rely on third-party libraries.

After: Fragments support refs, and native View Transitions, Trusted Types, and browser() utilities are now integrated into the core framework.

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product launchFeb 24, 2026

96% Verified

The React Foundation: A New Home for React Hosted by the Linux Foundation

The React project has transitioned its governance structure to the newly formed React Foundation. This entity is now officially hosted under the administrative umbrella of the Linux Foundation.

Before: React was governed and maintained primarily as a project under Meta's internal open-source division.

After: React is governed by the React Foundation, an independent entity hosted by the Linux Foundation.

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securityDec 11, 2025

96% Verified

Denial of Service and Source Code Exposure in React Server Components

React has identified two new vulnerabilities, CVE-2025-55184 and CVE-2025-55183, affecting React Server Components. These flaws allow for Denial of Service attacks and unauthorized Source Code Exposure.

Before: React Server Components were considered patched against the previous critical vulnerability identified in the prior week.

After: React Server Components are now identified as vulnerable to CVE-2025-55184 (DoS) and CVE-2025-55183 (Source Code Exposure).

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securityDec 3, 2025

96% Verified

Critical Security Vulnerability in React Server Components

React has identified an unauthenticated remote code execution vulnerability affecting React Server Components. Patched versions 19.0.1, 19.1.2, and 19.2.1 have been released to remediate this flaw.

Before: React Server Components in versions prior to 19.0.1, 19.1.2, and 19.2.1 were susceptible to unauthenticated remote code execution.

After: React versions 19.0.1, 19.1.2, and 19.2.1 include security patches that mitigate the remote code execution vulnerability in React Server Components.

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featureOct 16, 2025

96% Verified

React Conf 2025 Recap

React Conf 2025 introduced new architectural primitives for server-side rendering and updated the React compiler to optimize component re-rendering. These updates provide native support for streaming data patterns and automated memoization.

Before: Manual memoization via hooks and standard client-side hydration patterns.

After: Automated compiler-driven memoization and optimized server-to-client streaming primitives.

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product launchOct 7, 2025

96% Verified

Introducing the React Foundation

The React team is establishing the React Foundation to serve as a formal technical governance structure. This entity will oversee the long-term development and decision-making processes for the React ecosystem.

Before: React development was governed primarily by Meta's internal engineering team.

After: React development is governed by the newly established React Foundation.

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product launchOct 7, 2025

96% Verified

React Compiler v1.0

The React Compiler has reached its first stable production release. This version transitions the tool from experimental status to a stable build for general use.

Before: React optimization relied on manual developer implementation of useMemo, useCallback, and memo APIs.

After: React Compiler v1.0 provides automated, build-time memoization of components and hooks.

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Complete React Change Log Index

Date	Change Title	Type	Impact	Details
Sep 28, 2026	React 19 Releases Actions, useActionState Hook, and Server Functions	product_launch	10/10	View ➔
Sep 9, 2026	React 19.3	feature	8/10	View ➔
Feb 24, 2026	The React Foundation: A New Home for React Hosted by the Linux Foundation	product_launch	9/10	View ➔
Dec 11, 2025	Denial of Service and Source Code Exposure in React Server Components	security	9/10	View ➔
Dec 3, 2025	Critical Security Vulnerability in React Server Components	security	10/10	View ➔
Oct 16, 2025	React Conf 2025 Recap	feature	9/10	View ➔
Oct 7, 2025	Introducing the React Foundation	product_launch	9/10	View ➔
Oct 7, 2025	React Compiler v1.0	product_launch	9/10	View ➔