Node.js Under Fire: Critical CVEs Threaten App Stability and Security
- Anup Ghosh
- 2 minutes ago
- 1 min read
The Download
Three newly disclosed vulnerabilities in Node.js—CVE-2025-23166, CVE-2025-23167, and CVE-2025-23165—introduce serious risks to web applications and backend systems built on this widely used runtime. These flaws include memory corruption, improper HTTP header parsing (leading to request smuggling), and process crashes from poorly handled cryptographic operations. For MSPs, business owners, and IT operators running Node.js-based applications, these bugs can result in denial-of-service attacks, data leaks, or full application compromise. The popularity of Node.js in modern cloud and serverless environments makes this threat particularly urgent.
What You Can Do
Immediately audit your systems for affected Node.js versions and upgrade to the latest patched releases—v20.19.2, v22.15.1, v23.11.1, or v24.0.2 depending on your version line. Prioritize patching externally exposed APIs and services. In parallel, review server logs and WAF (Web Application Firewall) alerts for signs of request smuggling or abnormal behavior. Where possible, isolate or containerize Node.js apps to limit blast radius in case of exploitation, and ensure crash reporting is enabled to catch unexpected behavior early.
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