2025-041 Critical Security Vulnerability in React Server Components — CERT-EU-SA2025-041
CERT-EU · CERT-EU · CERT-EU-SA2025-041
ID
CERT-EU-SA2025-041
CERT-EU-SA2025-041
Date
Activity
Source
CERT-EU
CERT-EU
Vendor
CERT-EU
CERT-EU
Threat
critical
critical
Summary
On December 3, 2025, the React Team publicly disclosed a critical security vulnerability affecting React Server Components (RSC) and related packages. The vulnerability allows for unauthenticated remote code execution (RCE) via maliciously crafted HTTP requests. It is recommended to update all affected component packages and any frameworks that integrate them.
Product
Security advisory
What to do
General, cautious steps (verify details in the official source):
- Prioritize patching or mitigation immediately (treat as actively risky).
- Identify affected product versions in your inventory and verify whether you are impacted.
- Apply vendor patches/updates or recommended mitigations as soon as available.
- Read the official advisory for exact affected versions and remediation steps.