CVE-2019-5737: Node.js

High severity, CVSS 7.5. EPSS: 16.2% chance of exploitation in the next 30 days.

In Node.js including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1, an attacker can cause a Denial of Service (DoS) by establishing an HTTP or HTTPS connection in keep-alive mode and by sending headers very slowly. This keeps the connection and associated resources alive for a long period of time. Potential attacks are mitigated by the use of a load balancer or other proxy layer. This vulnerability is an extension of CVE-2018-12121, addressed in November and impacts all active Node.js release lines including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1.

Affected products

• Node.js Node.js: from 6.0.0, before 6.17.0 (fixed in 6.17.0); from 8.0.0, before 8.15.1 (fixed in 8.15.1); from 10.0.0, before 10.15.2 (fixed in 10.15.2); from 11.0.0, before 11.10.1 (fixed in 11.10.1)
• Opensuse Leap: version 42.3 only

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