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5.3
MEDIUM CVSS 3.1
CVE-2025-55183
Apache React Server Components Information Disclosure
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.

INFO

Published Date :

Dec. 11, 2025, 8:16 p.m.

Last Modified :

Dec. 12, 2025, 6:18 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-55183 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Vercel next.js
1 Facebook react
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Update React Server Components to a patched version to prevent source code leakage.
  • Update React Server Components to a secure version.
  • Review Server Function configurations for exposed arguments.
  • Apply vendor-provided security patches.
Public PoC/Exploit Available at Github

CVE-2025-55183 has a 44 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-55183.

URL Resource
https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components Exploit Vendor Advisory
https://www.facebook.com/security/advisories/cve-2025-55183 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-55183 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-55183 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
dbwlsdnr95/CVE-2025-55182-React2Shell-Nextjs-RSC-Analysis

None

TypeScript CSS JavaScript

Updated: 1 day, 13 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 20, 2025, 3:01 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
mshrynzw/AuraTime

None

PLpgSQL

Updated: 2 days, 4 hours ago
1 stars 0 fork 0 watcher
Born at : Dec. 19, 2025, 1:36 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
andrimuhyidin/aerotravel-apps

None

Shell JavaScript TypeScript Dockerfile CSS PLpgSQL Handlebars

Updated: 2 days, 1 hour ago
0 stars 0 fork 0 watcher
Born at : Dec. 17, 2025, 5:20 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
DanielWarg/Reflektera

None

JavaScript TypeScript CSS PLpgSQL

Updated: 4 days, 13 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 16, 2025, 5:53 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
jaykimdevop/addcow

None

CSS TypeScript JavaScript

Updated: 3 days ago
0 stars 0 fork 0 watcher
Born at : Dec. 16, 2025, 4:20 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
pnndrs/react-rsc-cve-scanner

behavior based cve detection for react server components

application-security appsec cve internal-tooling nextjs react react-security react-server-components rsc security-research security-tooling turbopack vulnerability-scanners

Python

Updated: 3 days, 7 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 15, 2025, 5:48 p.m. This repo has been linked 4 different CVEs too.
Profile Photo
pjt3591oo/2025-55184_2025-55183-_poc

None

Shell TypeScript JavaScript

Updated: 6 days, 18 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 15, 2025, 10:50 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
EvtDanya/rsc-vulnerabilities

Next.Js React Server Components (RSC) Vulnerabilities

code-disclosure cve-2025-55182 cve-2025-55183 cve-2025-55184 dos nextjs rce react rsc exploit poc react-server-components

Python Dockerfile TypeScript

Updated: 1 week ago
0 stars 0 fork 0 watcher
Born at : Dec. 14, 2025, 5:18 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
mds-main/David_Calendario_Trabajo

None

TypeScript CSS

Updated: 1 week ago
0 stars 0 fork 0 watcher
Born at : Dec. 14, 2025, 9 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
MammaniNelsonD/React2P4IM0Nshell

💥Extension Tool para Auditoría y Explotación avanzada RCE/Source Leak/Dos (CVE-2025-55182/83/84) para entornos Next.js y React Server Components (RSC) directamente desde tu navegador + Laboratorio Vulnerable❌

JavaScript CSS HTML

Updated: 6 days, 7 hours ago
3 stars 0 fork 0 watcher
Born at : Dec. 14, 2025, 5:24 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
abdozkaya/rsc-security-auditor

🛡️ Audit your Next.js & React Server Components stack for critical vulnerabilities (CVE-2025-66478, CVE-2025-55184). Detects risks & generates fix commands. 100% Client-side.

cve-scanning nextjs react rsc vulnerability-scanners

CSS TypeScript JavaScript

Updated: 1 week ago
4 stars 0 fork 0 watcher
Born at : Dec. 12, 2025, 10:37 p.m. This repo has been linked 4 different CVEs too.
Profile Photo
StealthMoud/react-server-cve-lab

Security research lab for CVE-2025-55183 and CVE-2025-55184 in React Server Components

cve-2025-55183-cve-2025-55184 security-react-nextjs-cve

Dockerfile JavaScript Python

Updated: 5 days, 18 hours ago
2 stars 0 fork 0 watcher
Born at : Dec. 12, 2025, 9:54 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
omaidnebari/RSC-Scanner-POC

CVE-2025-55183 Scanner

cve cve-2025-55183 poc react

Python

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : Dec. 12, 2025, 6:42 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
asg5704/check-cve

A collection of Bash scripts that check CVEs relating to Frontend

Shell

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : Dec. 12, 2025, 4:43 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
1imn1/rsc-exposure-audit

Black-box exposure audit for Next.js / React Server Components (RSC) endpoints (non-exploit).

Python

Updated: 4 days, 11 hours ago
1 stars 0 fork 0 watcher
Born at : Dec. 12, 2025, 2:58 p.m. This repo has been linked 4 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-55183 vulnerability anywhere in the article.

  • CybersecurityNews
OpenAI GPT-5.2-Codex Supercharges Agentic Coding and Vulnerability Detection

OpenAI has unveiled GPT-5.2-Codex, a cutting-edge model optimized for agentic coding and enhanced cybersecurity tasks. The release highlights breakthroughs in handling complex software engineering and ... Read more

Published Date: Dec 19, 2025 (3 days, 2 hours ago)
  • The Register
China, Iran are having a field day with React2Shell, Google warns

At least five more Chinese spy crews, Iran-linked goons, and financially motivated criminals are now attacking the React2Shell, a maximum-severity flaw in the widely used React JavaScript library, acc ... Read more

Published Date: Dec 15, 2025 (6 days, 11 hours ago)
  • The Register
New React vulns leak secrets, invite DoS attacks

If you're running React Server Components, you just can't catch a break. In addition to already-reported flaws, newly discovered bugs allow attackers to hang vulnerable servers and potentially leak Se ... Read more

Published Date: Dec 12, 2025 (1 week, 2 days ago)
  • Google Cloud
Multiple Threat Actors Exploit React2Shell (CVE-2025-55182)

Written by: Aragorn Tseng, Robert Weiner, Casey Charrier, Zander Work, Genevieve Stark, Austin Larsen Introduction On Dec. 3, 2025, a critical unauthenticated remote code execution (RCE) vulnerability ... Read more

Published Date: Dec 12, 2025 (1 week, 2 days ago)
  • security.nl
Nieuwe React-kwetsbaarheden leiden tot denial of service en broncode-lek

Onderzoekers hebben nieuwe kwetsbaarheden in React Server Components ontdekt waardoor aanvallers een denial of service kunnen veroorzaken of broncode stelen. Er zijn updates beschikbaar gesteld en Rea ... Read more

Published Date: Dec 12, 2025 (1 week, 2 days ago)
  • The Hacker News
New React RSC Vulnerabilities Enable DoS and Source Code Exposure

Dec 12, 2025Ravie LakshmananSoftware Security / Vulnerability The React team has released fixes for two new types of flaws in React Server Components (RSC) that, if successfully exploited, could res ... Read more

Published Date: Dec 12, 2025 (1 week, 2 days ago)
  • Daily CyberSecurity
React Patches Two New Flaws Risking Server-Crashing DoS and Source Code Disclosure

The security saga surrounding React Server Components continues this week. Just days after the React team patched a critical remote code execution (RCE) flaw, security researchers digging into those v ... Read more

Published Date: Dec 12, 2025 (1 week, 3 days ago)
  • CybersecurityNews
New Vulnerabilities in React Server Components Allow DoS Attacks and Source Code Leaks

Less than a week after addressing a critical Remote Code Execution (RCE) vulnerability, the React team has disclosed three additional security flaws affecting React Server Components (RSC). Security r ... Read more

Published Date: Dec 12, 2025 (1 week, 3 days ago)
  • The Cloudflare Blog
React2Shell and related RSC vulnerabilities threat brief: early exploitation activity and threat actor techniques

2025-12-117 min readOn December 3, 2025, immediately following the public disclosure of the critical, maximum-severity React2Shell vulnerability (CVE-2025-55182), the Cloudforce One Threat Intelligenc ... Read more

Published Date: Dec 11, 2025 (1 week, 3 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-55183 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Dec. 12, 2025

    Action Type Old Value New Value
    Added CWE NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.2 *cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* versions from (including) 19.1.0 up to (excluding) 19.1.3 *cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* versions from (including) 19.2.0 up to (excluding) 19.2.2
    Added CPE Configuration OR *cpe:2.3:a:vercel:next.js:15.6.0:-:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary0:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary1:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary10:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary11:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary12:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary13:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary14:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary15:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary16:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary17:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary18:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary19:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary2:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary20:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary21:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary22:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary23:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary24:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary25:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary26:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary27:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary28:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary29:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary3:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary30:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary31:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary32:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary33:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary34:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary35:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary36:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary37:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary38:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary39:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary4:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary40:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary41:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary42:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary43:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary44:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary45:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary46:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary47:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary48:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary49:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary5:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary50:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary51:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary52:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary53:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary54:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary55:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary56:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary57:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary6:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary7:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary8:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary9:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.0.0 up to (excluding) 15.0.7 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.1.0 up to (excluding) 15.1.11 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.2.0 up to (excluding) 15.2.8 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.3.0 up to (excluding) 15.3.8 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.4.0 up to (excluding) 15.4.10 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 15.5.0 up to (excluding) 15.5.9 *cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* versions from (including) 16.0.0 up to (excluding) 16.0.10 *cpe:2.3:a:vercel:next.js:15.6.0:canary58:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:15.6.0:canary59:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:-:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary0:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary1:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary10:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary11:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary12:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary13:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary14:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary15:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary16:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary17:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary18:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary2:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary3:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary4:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary5:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary6:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary7:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary8:*:*:*:node.js:*:* *cpe:2.3:a:vercel:next.js:16.1.0:canary9:*:*:*:node.js:*:*
    Added Reference Type Facebook, Inc.: https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components Types: Exploit, Vendor Advisory
    Added Reference Type Facebook, Inc.: https://www.facebook.com/security/advisories/cve-2025-55183 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Dec. 11, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    Added Reference https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
    Added Reference https://www.facebook.com/security/advisories/cve-2025-55183
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact