CVE-2025-55184

HIGH EXPLOITED NUCLEI

React Server Components <19.2.1 - DoS

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-55184 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 15 public exploits from researchers including cybertechajju, ejpir, adminlove520. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains a professional-grade exploitation framework for CVE-2025-55184, a high-severity Denial of Service (DoS) vulnerability affecting React Server Components (RSC) implementations. The tool includes multiple attack modes, WAF bypass techniques, and a sustained attack feature.

Description

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 unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.

Exploits (15)

nomisec WORKING POC 15 stars
by cybertechajju · dos
https://github.com/cybertechajju/CVE-2025-55184-POC-Expolit

This repository contains a professional-grade exploitation framework for CVE-2025-55184, a high-severity Denial of Service (DoS) vulnerability affecting React Server Components (RSC) implementations. The tool includes multiple attack modes, WAF bypass techniques, and a sustained attack feature.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: React Server Components (Next.js, Waku, Remix, React)
No auth needed
Prerequisites: Target running vulnerable RSC implementation · Network access to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github SCANNER 2 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2025/CVE-2025-55184

The repository contains a scanner for CVE-2024-21762, a Fortinet SSL VPN vulnerability, which checks for the presence of the vulnerability by sending crafted HTTP requests. It includes Python scripts to test individual hosts or lists of IPs for vulnerability status.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Fortinet SSL VPN
No auth needed
Prerequisites: network access to the target Fortinet SSL VPN interface
devstral-2 · analyzed Feb 27, 2026 Full analysis →
nomisec SCANNER 2 stars
by KkHackingLearning · poc
https://github.com/KkHackingLearning/CVE-2025-55184_Testing

This repository contains a Python-based scanner for detecting CVE-2025-55184, a DoS vulnerability in React Server Components. The tool sends a crafted payload to the `/_rsc` endpoint and measures response time to determine vulnerability.

Classification
Scanner 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: React Server Components (versions 19.0.0-19.0.2, 19.1.0-19.1.2, 19.2.0-19.2.2)
No auth needed
Prerequisites: Access to the target server's `/_rsc` endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 2 stars
by hans362 · dos
https://github.com/hans362/CVE-2025-55184-poc

The PoC demonstrates a DoS vulnerability in Next.js and Waku by sending a malformed multipart request with a specific payload. The exploit triggers a crash in the target application by leveraging improper handling of the multipart form data.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Next.js (unknown version), Waku (unknown version)
No auth needed
Prerequisites: Network access to the target application
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 1 stars
by yogeshkumar09 · poc
https://github.com/yogeshkumar09/CVE-2025-55184_Testing

This repository contains a Python-based scanner for CVE-2025-55184, a DoS vulnerability in React Server Components caused by malformed RSC payloads leading to infinite resolution loops. The tool sends a crafted JSON payload to the target endpoint and checks for delays or timeouts indicative of vulnerability.

Classification
Scanner 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: React Server Components (versions before 19.0.2, 19.1.3, 19.2.2)
No auth needed
Prerequisites: Network access to the target server · Target must be running a vulnerable version of React Server Components
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP 1 stars
by shubham-01-star · poc
https://github.com/shubham-01-star/OpsGuard-simulation

This repository contains a frontend UI for OpsGuard, a simulation dashboard designed to visualize an autonomous SRE agent's workflow. It includes setup instructions, feature descriptions, and customization details but does not contain exploit code or offensive techniques.

Classification
Writeup 100%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: OpsGuard (simulation dashboard)
No auth needed
Prerequisites: OpsGuard Backend running on http://localhost:3000
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 1 stars
by KingHacker353 · dos
https://github.com/KingHacker353/CVE-2025-55184

The repository contains a Python-based scanner for detecting CVE-2025-55184, targeting potential vulnerabilities in frameworks like Next.js, Waku, and Remix. It includes fingerprinting, WAF bypass techniques, and payload testing but lacks actual exploit code for achieving RCE or other offensive actions.

Classification
Scanner 85%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Next.js, Waku, Remix (frameworks)
Auth required
Prerequisites: Target URL · Network access to the target · Authorization for ethical testing
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by JSH-data · poc
https://github.com/JSH-data/CVE-2025-55184_CVE-2025-67779

This repository contains a proof-of-concept exploit for CVE-2025-55184 and CVE-2025-67779, targeting React Flight Server with a DoS attack via crafted cyclic references in server components. The exploit triggers an infinite loop by pre-initializing a cycle (B -> C -> B) before accessing the victim chunk (A).

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: React Flight Server (version not specified)
No auth needed
Prerequisites: Access to a vulnerable React Flight Server instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SUSPICIOUS
by yogeshkumar09 · poc
https://github.com/yogeshkumar09/yogeshkumar09.github.io

The repository lacks actual exploit code and instead directs users to download a script from an external release page. The README is vague, lacks technical details about CVE-2025-55184, and uses marketing language typical of social engineering lures.

Classification
Suspicious 95%
Attack Type
Other
Complexity
Theoretical
Reliability
Theoretical
Target: React Server Components (version unspecified)
No auth needed
Prerequisites: none specified
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by Tarekhshaikh13 · poc
https://github.com/Tarekhshaikh13/CVE-2025-55184

This repository provides a minimal intentionally vulnerable Next.js environment to test security scanners against CVE-2025-55182, a critical RCE vulnerability affecting React Server Components. It includes a PoC HTTP payload for exploiting the deserialization flaw in vulnerable versions of Next.js and React.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Next.js 16.0.6, React 19.2.0, React Server Components
No auth needed
Prerequisites: Vulnerable versions of Next.js and React Server Components · Network access to the target application
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WORKING POC
by bakhod1r · gopoc
https://github.com/bakhod1r/CVE-2025-55184

This repository contains a functional Go-based exploit for CVE-2025-55184, which appears to be a DoS vulnerability. The exploit sends multiple crafted multipart HTTP requests to a target, likely triggering a denial-of-service condition.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Unknown (likely a web server or application processing multipart form data)
No auth needed
Prerequisites: List of target domains in 'domains.txt'
devstral-2 · analyzed May 12, 2026 Full analysis →
nomisec WORKING POC
by BakhodiribnYashinibnMansur · dos
https://github.com/BakhodiribnYashinibnMansur/CVE-2025-55184

This Go-based exploit sends multiple concurrent HTTP POST requests with a malformed multipart form to trigger a DoS condition in the target software. The payload `$@0` is sent in a file part, which appears to exploit a parsing vulnerability.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Unknown (CVE-2025-55184)
No auth needed
Prerequisites: List of target URLs in a file named 'domains.txt'
devstral-2 · analyzed Feb 16, 2026 Full analysis →
vulncheck_xdb SCANNER
dos
https://github.com/Kajal5414/CVE-2025-55184_Testing

The repository contains a Python script designed to scan for CVE-2025-55184, a DoS vulnerability in React Server Components. It sends a crafted payload to the `/_rsc` endpoint and checks for excessive response time or timeout, indicating potential vulnerability.

Classification
Scanner 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: React Server Components (versions 19.0.0-19.0.2, 19.1.0-19.1.2, 19.2.0-19.2.2)
No auth needed
Prerequisites: Access to the target server's `/_rsc` endpoint
devstral-2 · analyzed Apr 15, 2026 Full analysis →
vulncheck_xdb WRITEUP
dos
https://github.com/StealthMoud/react-server-cve-lab

This repository provides a comprehensive technical analysis of CVE-2025-55184, detailing its root cause, exploitation mechanism, and impact. It includes documentation, exploit code, and a scanner for detection.

Classification
Writeup 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: React Server Components (React 19.0.0 - 19.2.2)
No auth needed
Prerequisites: Network access to the target server
devstral-2 · analyzed Apr 15, 2026 Full analysis →

Nuclei Templates (1)

React Server Components - Denial of Service
HIGHVERIFIEDby DhiyaneshDk
Shodan: http.component:"Next.js"

Scores

CVSS v3 7.5
EPSS 0.4124
EPSS Percentile 97.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2026-04-15
CWE
CWE-502
Status published
Products (5)
facebook/react 19.0.0 - 19.0.2
npm/react-server-dom-parcel 19.0.0 - 19.0.2npm
npm/react-server-dom-turbopack 19.0.0 - 19.0.2npm
npm/react-server-dom-webpack 19.0.0 - 19.0.2npm
vercel/next.js 15.6.0 (46 CPE variants)
Published Dec 11, 2025
Tracked Since Feb 18, 2026