CVE-2025-55183

MEDIUM

React Server Components <19.3 - Info Disclosure

Title source: llm

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.

Exploits (7)

nomisec SCANNER 8 stars
by williavs · poc
https://github.com/williavs/nextjs-security-update
nomisec SCANNER 8 stars
by kimtruth · poc
https://github.com/kimtruth/CVE-2025-55183-poc
nomisec WORKING POC 4 stars
by StealthMoud · poc
https://github.com/StealthMoud/react-server-cve-lab
nomisec WORKING POC 4 stars
by X-Cotang · poc
https://github.com/X-Cotang/CVE-2025-55183_POC
nomisec WORKING POC 2 stars
by Saturate · poc
https://github.com/Saturate/CVE-2025-55183
github WORKING POC 2 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2025/CVE-2025-55183
nomisec WORKING POC
by omaidnebari · poc
https://github.com/omaidnebari/RSC-Scanner-POC

Scores

CVSS v3 5.3
EPSS 0.2343
EPSS Percentile 95.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Classification

Status published

Affected Products (50)

facebook/react < 19.0.2
vercel/next.js < 15.0.7
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
vercel/next.js
... and 35 more

Timeline

Published Dec 11, 2025
Tracked Since Feb 18, 2026