New React RSC Vulnerabilities Enable DoS and Source Code Exposure

The React team has released fixes for two new types of flaws in React Server Components RSC that, if successfully exploited, could result in denial-of-service DoS or source code exposure. The team said the issues were found by the security community while attempting to exploit the patches release...

CVE-2025-67779

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests...

Deserialization of Untrusted Data

Overview @vitejs/plugin-rsc is a React Server Components RSC support for Vite. Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to unsafe deserialization of payloads from HTTP requests to Server Function endpoints. An attacker can cause the server process ...

Deserialization of Untrusted Data

Overview next is a react framework. Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to unsafe deserialization of payloads from HTTP requests to Server Function endpoints. An attacker can cause the server process to enter an infinite loop and hang,...

CVE-2025-67779

CVE-2025-67779 describes a denial-of-service vulnerability in React Server Components caused by an incomplete fix for unsafe deserialization. The issue allows crafted HTTP payloads to Server Function endpoints to trigger an infinite loop, tying up CPU and potentially making the server unresponsiv...

CVE-2025-67779

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests...

Deserialization of Untrusted Data

Overview @modern-js/utils is a progressive web framework based on React. Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to unsafe deserialization of payloads from HTTP requests to Server Function endpoints. An attacker can cause the server process to ent...

Deserialization of Untrusted Data

Overview react-server-dom-turbopack is a React Server Components bindings for DOM using Turbopack. This is intended to be integrated into meta-frameworks. It is not intended to be imported directly. Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to unsaf...

EUVD-2025-202877

Denial of Service Vulnerability in React Server Components...

Deserialization of Untrusted Data

Overview react-server-dom-parcel is a React Server Components bindings for DOM using Parcel. This is intended to be integrated into meta-frameworks. It is not intended to be imported directly. Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to unsafe...

CVE-2025-55184

A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafe...

CVE-2025-55184

A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafe...

CVE-2025-55184

A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafe...

CVE-2025-55184

CVE-2025-55184 is a pre-authentication Denial of Service vulnerability in React Server Components from versions 19.0.0 through 19.2.2 (affecting react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack). The issue arises from unsafe deserialization of HTTP payloads sent t...

CVE-2025-67489

CVE-2025-67489 affects the @vitejs/plugin-rs library (React Server Components support for Vite). Versions ≤0.5.5 are vulnerable to arbitrary remote code execution on the development server due to unsafe dynamic imports in server function APIs (loadServerAction, decodeReply, decodeAction) when use...

Exploit for Deserialization of Untrusted Data in Facebook React

React Server Components RCE – README Description React S...

Meta React Server Components Remote Code Execution Vulnerability

Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with...

Remote Code Execution (RCE)

React Server Components are vulnerable to Remote Code Execution RCE. The vulnerability is due to the unsafe deserialization of attacker-controlled payloads sent to Server Function endpoints, which allows an attacker to execute arbitrary code without authentication...

React Server Components 19.0 / 19.1.0 / 19.1.1 / 19.2.0 Remote Code Execution (React2Shell)

React Server Components react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack versions 19.0, 19.1.0, 19.1.1, and 19.2.0 are vulnerable to an Unauthenticated Remote Code Execution. An attacker can exploit a flaw in how React decodes payloads sent to React Server Functio...

React 19.0 / 19.1.0 / 19.1.1 / 19.2.0 Remote Code Execution

On November 29th, Lachlan Davidson reported a security vulnerability in React that allows unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Even if your app does not implement any React Server Function endpoints it ma...