@cedarjs/api-server (>=1.0.0-canary.12863 <=1.0.0-canary.12878), @cedarjs/cli (>=1.0.0-canary.12863 <=2.0.3-next.1) +10 more potentially affected by CVE-2025-55183 +1 more via react-server-dom-webpack (=19.2.1)

react-server-dom-webpack NPM version =19.2.1 is affected by a known vulnerability. The following packages have a transitive dependency on react-server-dom-webpack and may be impacted: - @cedarjs/api-server =1.0.0-canary.12863, =1.0.0-canary.12863, =1.0.0-canary.12863, =1.0.0-canary.12863,...

Exposure of Sensitive System Information to an Unauthorized Control Sphere

Overview @vitejs/plugin-rsc is a React Server Components RSC support for Vite. Affected versions of this package are vulnerable to Exposure of Sensitive System Information to an Unauthorized Control Sphere. An attacker can access the source code of any Server Function by sending a malicious HTTP...

Chain Reaction: Attack Campaign Activity in the Aftermath of React Server Components Vulnerability

Introduction and Vulnerability Overview Earlier this month, Imperva published an initial advisory outlining how our customers were protected against the newly disclosed React2Shell vulnerability impacting React Server Components RSC. That post focused on the essentials: a critical flaw arising fr...

CVE-2025-55183

An information leak vulnerability exists in specific configurations of 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. A specifically...

CVE-2025-55183

An information leak vulnerability exists in specific configurations of 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. A specifically...

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-2025-55184

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-2025-55183

An information leak vulnerability exists in specific configurations of 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. A specifically...

CVE-2025-55183

An information leak vulnerability exists in specific configurations of 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. A specifically...

CVE-2025-55183

CVE-2025-55183 is a source code disclosure vulnerability in React Server Components (RSC) Server Functions. A crafted HTTP request to a vulnerable Server Function may cause the server to return the full source code of that function when the argument is stringified. Affected are RSC versions 19.0....

Exploit for Deserialization of Untrusted Data in Facebook React

Next.js React Server Components RCE Exploit Exploits CVE-2025...

Exploit for Deserialization of Untrusted Data in Facebook React

React2Shell CVE-2025-55182 Visualization An interactive edu...

Exploit for Deserialization of Untrusted Data in Facebook React

CVE-2025-55182 React2Shell Exploit Overview CVE-2025-55...

React2Shell: Decoding CVE-2025-55182 – The Silent Threat in React Server Components

On December 3, 2025, a critical remote code execution RCE vulnerability, dubbed "React2Shell," was disclosed, impacting React Server Components and frameworks like Next.js. The flaw, CVE-2025-55182, could lead to full server takeover and is rated CVSS 10.0. It is under active exploitation, has be...

It didn’t take long: CVE-2025-55182 is now under active exploitation

On December 4, 2025, researchers published details on the critical vulnerability CVE-2025-55182, which received a CVSS score of 10.0. It has been unofficially dubbed React2Shell, as it affects React Server Components RSC functionality used in web applications built with the React library. RSC...

Exploit for Deserialization of Untrusted Data in Facebook React

CVE-2025-55182 Exploitation Tool A comprehensive security res...

Exploit for CVE-2025-66478

Next.js-RSC-RCE-Scanner-CVE-2025-66478 CVE-2025-66478 Next.js...

React Server Components deserialization vulnerability

Added: 12/11/2025 Background React is a Javascript library for building user interfaces. React Server Components are React components designed for running on web servers. Problem A deserialization vulnerability in React Server Components allows a remote attacker to execute arbitrary commands by...