CVE-2019-5737

Name: CVE-2019-5737
Creator: NVD / NIST
Published: 2019-03-28T17:29:01.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 16.18%

Last modified Jun 17, 2026

CVE-2019-5737 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 16.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

16.18%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nodejs	Node.Js	>= 6.0.0, < 6.17.0
Nodejs	Node.Js	>= 8.0.0, < 8.15.1
Nodejs	Node.Js	>= 10.0.0, < 10.15.2
Nodejs	Node.Js	>= 11.0.0, < 11.10.1
Opensuse	Leap	42.3

References

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

Timeline

Published: Mar 28, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5737?

How severe is CVE-2019-5737?

CVE-2019-5737 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 16.18% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5737?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5737?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST