What’s Vulnerable › Vulnerabilities

CVE-2019-5737

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-28 · updated 2026-06-17
• Weakness: CWE-400

Description

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: from 6.0.0 before 6.17.0; from 8.0.0 before 8.15.1; from 10.0.0 before 10.15.2; from 11.0.0 before 11.10.1 — fixed in 10.15.2, 11.10.1, 6.17.0, 8.15.1
• openSUSE Leap: 42.3

How to fix

Upgrade to a fixed version: Node.js 10.15.2, 11.10.1, 6.17.0, 8.15.1. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00059.html
• https://access.redhat.com/errata/RHSA-2019:1821
• https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/
• https://security.gentoo.org/glsa/202003-48
• https://security.netapp.com/advisory/ntap-20190502-0008/
• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00059.html
• https://access.redhat.com/errata/RHSA-2019:1821
• https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/

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