Critical Security Vulnerability in React Server Components

Critical Security Vulnerability in React Server Components – React

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Railway on Twitter / X

A critical RCE vulnerability was discovered in React Server Components. Railway has collaborated with Meta/Vercel teams & deployed a platform-level patch that blocks malicious requests matching this exploit pattern at our Web Application Firewall.Your service is protected while… https://t.co/8a5WWYshzN— Railway (@Railway) December 3, 2025

Netlify's response to the critical React security vulnerability

Netlify has patched a critical remote code execution vulnerability in React Server Functions. All Netlify customers are protected.

High Fidelity Detection Mechanism for RSC/Next.js RCE (CVE-2025-55182 & CVE-2025-66478) › Searchlight Cyber

This morning, an advisory was released for Next.js about a vulnerability that leads to RCE in default configurations, with no prerequisites. The root cause of this issue lies in React Server Components, which Next.js utilizes. Over the last day, we have noticed an incredible amount of incorrect PoCs floating around on GitHub that do not

GitHub - fatguru/CVE-2025-55182-scanner: A non-intrusive surface scanner for CVE-2025-55182 (React Server Components RCE). Detects exposed RSC endpoints in React 19 and Next.js applications

A non-intrusive surface scanner for CVE-2025-55182 (React Server Components RCE). Detects exposed RSC endpoints in React 19 and Next.js applications - fatguru/CVE-2025-55182-scanner

Cloudflare WAF proactively protects against React vulnerability

Cloudflare offers protection against a new high profile vulnerability for React Server Components: CVE-2025-55182. All WAF customers are automatically protected as long as the WAF is deployed.

Common Sense Refactoring of a Messy React Component | Alex Kondov

One thing I've learned from all the consulting I've done is that rewrites rarely lead to anything good. Almost in all cases, when you have an application runnin

The Axios supply chain attack used individually targeted social engineering

The Axios team have published a full postmortem on the supply chain attack which resulted in a malware dependency going out in a release the other day, and it involved …

The Axios supply chain attack used individually targeted social engineering

The Axios team have published a full postmortem on the supply chain attack which resulted in a malware dependency going out in a release the other day, and it involved …

Post Mortem: axios npm supply chain compromise · Issue #10636 · axios/axios

Post Mortem: axios npm supply chain compromise Date: March 31, 2026 Author: Jason Saayman Status: Remediation in progress On March 31, 2026, two malicious versions of axios (1.14.1 and 0.30.4) were...

Patch FlightReplyServer with fixes from ReactFlightClient by sebmarkbage · Pull Request #35277 · facebook/react

FlightReplyServer are for client->server and ReactFlightClient is for server->client. They're not 100% symmetrical. We did a number of refactors to ReactFlightClient in PRs li...

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