VBS-2026-0017CRITICALCVSS 10CWE-502

React2Shell ecosystem RCE exposure in hosted AI app builders (CVE-2025-55182)

A critical unauthenticated RCE in vulnerable React Server Components stacks impacted many hosted AI-built apps and rapid exploit activity followed disclosure.

Published
2025-12-03
Discovered By
React security advisory
CVSS Score
10 / 10
Affected AI Platforms
ReplitAny vulnerable RSC deployment
Affected Tech Stack
React Server ComponentsUnsafe deserialization
Remediation

Upgrade React packages to patched versions immediately and add temporary detection/blocking controls for exposed vulnerable endpoints.

#react#rce#deserialization#replit#cve
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FAQ
Q

How do I check if my React Server Components + Unsafe deserialization app is affected by react2Shell ecosystem RCE exposure in hosted AI app builders (CVE-2025-55182)?

A

A critical unauthenticated RCE in vulnerable React Server Components stacks impacted many hosted AI-built apps and rapid exploit activity followed disclosure.. Search your codebase for React Server Components, Unsafe deserialization patterns and verify the remediation has been applied. This is rated CVSS 10 — treat it as a live incident if your app is already in production.

Q

Why does Replit and Any vulnerable RSC deployment generate code with CWE-502 (critical severity)?

A

A critical unauthenticated RCE in vulnerable React Server Components stacks impacted many hosted AI-built apps and rapid exploit activity followed disclosure.

Q

How do I fix react2Shell ecosystem RCE exposure in hosted AI app builders (CVE-2025-55182)?

A

Upgrade React packages to patched versions immediately and add temporary detection/blocking controls for exposed vulnerable endpoints.

Q

What is CVE-2025-55182 and how does it affect Replit projects?

A

CVE-2025-55182 is a critical severity CVE with a CVSS score of 10, affecting Replit, Any vulnerable RSC deployment. A critical unauthenticated RCE in vulnerable React Server Components stacks impacted many hosted AI-built apps and rapid exploit activity followed disclosure..