Vulnerabilities & Exploits · Credential Theft

Next.js React2Shell exploit automates AI and cloud credential theft

React2Shell exploitation has escalated from remote code execution to automated mass credential harvesting on vulnerable Next.js React Server Components. Attackers now extract AI API keys, cloud tokens, SSH keys, and environment secrets from at least 766 compromised servers worldwide without further interaction after initial exploitation. This turns each infected host into a gateway for deeper access to cloud platforms, AI services, and SSH targets, extending the blast radius beyond the web application itself. Patch vulnerable React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 immediately. Treat all secrets accessible from affected hosts as compromised, as remediation of the host alone does not prevent follow-on attacks using stolen credentials.

5 sources · Apr 7

CVE-2025-55182

NVD KEV

Known exploited · CISA KEV

CVSS 10 CRITICAL: a pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0… Known ransomware campaign use. EPSS 66% (99th percentile).

CISA federal remediation date Dec 12 · date passed

Timeline

Sources

Part of the PlainSec briefing for 2026-04-04

Every edition of this story: Next.js React2Shell exploit automates AI and cloud credential theft

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