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Medium · 5.3 Public exploit CVE-2025-55183 EUVD-2025-202879GHSA-925w-6v3x-g4j4

Source Code Exposure Vulnerability in React Server Components

Published Dec 11, 2025 · Updated Jan 7, 2026 · Assigned by Meta

Vendor: Meta Product: react-server-dom-parcel Product: react-server-dom-turbopack Product: react-server-dom-webpack Package: react-server-dom-parcel Package: react-server-dom-turbopack Package: react-server-dom-webpack Ecosystem: npm

Description

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 crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.

Affected products

VendorProductAffectedFixed
Meta react-server-dom-webpack 19.0.0 – ≤ 19.0.1, 19.1.0 – ≤ 19.1.2, 19.2.0 – ≤ 19.2.1 —
Meta react-server-dom-turbopack 19.0.0 – ≤ 19.0.1, 19.1.0 – ≤ 19.1.2, 19.2.0 – ≤ 19.2.1 —
Meta react-server-dom-parcel 19.0.0 – ≤ 19.0.1, 19.1.0 – ≤ 19.1.2, 19.2.0 – ≤ 19.2.1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 6 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
npm react-server-dom-parcel >= 19.0.0, < 19.0.2 19.0.2 GHSA-925w-6v3x-g4j4
npm react-server-dom-parcel >= 19.1.0, < 19.1.3 19.1.3 GHSA-925w-6v3x-g4j4
npm react-server-dom-parcel >= 19.2.0, < 19.2.2 19.2.2 GHSA-925w-6v3x-g4j4
npm react-server-dom-turbopack >= 19.0.0, < 19.0.2 19.0.2 GHSA-925w-6v3x-g4j4
npm react-server-dom-turbopack >= 19.1.0, < 19.1.3 19.1.3 GHSA-925w-6v3x-g4j4
npm react-server-dom-turbopack >= 19.2.0, < 19.2.2 19.2.2 GHSA-925w-6v3x-g4j4
npm react-server-dom-webpack >= 19.0.0, < 19.0.2 19.0.2 GHSA-925w-6v3x-g4j4
npm react-server-dom-webpack >= 19.1.0, < 19.1.3 19.1.3 GHSA-925w-6v3x-g4j4
npm react-server-dom-webpack >= 19.2.0, < 19.2.2 19.2.2 GHSA-925w-6v3x-g4j4

Advisories 2

References