CVE-2019-5739: Node.js

High severity, CVSS 7.5. EPSS: 4.9% chance of exploitation in the next 30 days.

Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.

Affected products

• Node.js Node.js: up to and including 6.16.0
• Opensuse Leap: version 42.3 only

Published 2019-03-28. Last modified 2026-06-17.